Release v5.3.9

Closes gh-27156

CONTRIBUTING.md

@@ -72,7 +72,7 @@ to start a discussion first or have already created an issue, once a pull reques
 created, we will close the issue as superseded by the pull request, and the discussion
 about the issue will continue under the pull request.
 
-1. Always check out the `master` branch and submit pull requests against it
+1. Always check out the `main` branch and submit pull requests against it
 (for target version see [settings.gradle](settings.gradle)).
 Backports to prior versions will be considered on a case-by-case basis and reflected as
 the fix version in the issue tracker.

build.gradle

@@ -1,7 +1,7 @@
 plugins {
 	id 'io.spring.dependency-management' version '1.0.9.RELEASE' apply false
 	id 'io.spring.nohttp' version '0.0.5.RELEASE'
-	id 'org.jetbrains.kotlin.jvm' version '1.4.31' apply false
+	id 'org.jetbrains.kotlin.jvm' version '1.5.21' apply false
 	id 'org.jetbrains.dokka' version '0.10.1' apply false
 	id 'org.asciidoctor.jvm.convert' version '3.1.0'
 	id 'org.asciidoctor.jvm.pdf' version '3.1.0'
@@ -9,8 +9,9 @@ plugins {
 	id "io.freefair.aspectj" version '5.1.1' apply false
 	id "com.github.ben-manes.versions" version '0.28.0'
 	id "com.github.johnrengelman.shadow" version "6.1.0" apply false
-	id "me.champeau.gradle.jmh" version "0.5.2" apply false
-	id "org.jetbrains.kotlin.plugin.serialization" version "1.4.31" apply false
+	id "me.champeau.jmh" version "0.6.4" apply false
+	id "org.jetbrains.kotlin.plugin.serialization" version "1.5.21" apply false
+	id "org.unbroken-dome.xjc" version '2.0.0' apply false
 }
 
 ext {
@@ -26,18 +27,19 @@ configure(allprojects) { project ->
 
 	dependencyManagement {
 		imports {
-			mavenBom "com.fasterxml.jackson:jackson-bom:2.12.2"
-			mavenBom "io.netty:netty-bom:4.1.60.Final"
-			mavenBom "io.projectreactor:reactor-bom:2020.0.5"
-			mavenBom "io.r2dbc:r2dbc-bom:Arabba-SR9"
-			mavenBom "io.rsocket:rsocket-bom:1.1.0"
-			mavenBom "org.eclipse.jetty:jetty-bom:9.4.38.v20210224"
-			mavenBom "org.jetbrains.kotlin:kotlin-bom:1.4.30"
-			mavenBom "org.jetbrains.kotlinx:kotlinx-coroutines-bom:1.4.3"
-			mavenBom "org.junit:junit-bom:5.7.1"
+			mavenBom "com.fasterxml.jackson:jackson-bom:2.12.4"
+			mavenBom "io.netty:netty-bom:4.1.65.Final"
+			mavenBom "io.projectreactor:reactor-bom:2020.0.9"
+			mavenBom "io.r2dbc:r2dbc-bom:Arabba-SR10"
+			mavenBom "io.rsocket:rsocket-bom:1.1.1"
+			mavenBom "org.eclipse.jetty:jetty-bom:9.4.43.v20210629"
+			mavenBom "org.jetbrains.kotlin:kotlin-bom:1.5.21"
+			mavenBom "org.jetbrains.kotlinx:kotlinx-coroutines-bom:1.5.1"
+			mavenBom "org.jetbrains.kotlinx:kotlinx-serialization-bom:1.2.1"
+			mavenBom "org.junit:junit-bom:5.7.2"
 		}
 		dependencies {
-			dependencySet(group: 'org.apache.logging.log4j', version: '2.14.0') {
+			dependencySet(group: 'org.apache.logging.log4j', version: '2.14.1') {
 				entry 'log4j-api'
 				entry 'log4j-core'
 				entry 'log4j-jul'
@@ -49,12 +51,12 @@ configure(allprojects) { project ->
 			}
 			dependency "com.google.code.findbugs:jsr305:3.0.2"
 
-			dependencySet(group: 'org.aspectj', version: '1.9.6') {
+			dependencySet(group: 'org.aspectj', version: '1.9.7') {
 				entry 'aspectjrt'
 				entry 'aspectjtools'
 				entry 'aspectjweaver'
 			}
-			dependencySet(group: 'org.codehaus.groovy', version: '3.0.7') {
+			dependencySet(group: 'org.codehaus.groovy', version: '3.0.8') {
 				entry 'groovy'
 				entry 'groovy-jsr223'
 				entry 'groovy-templates'  // requires findbugs for warning-free compilation
@@ -65,18 +67,18 @@ configure(allprojects) { project ->
 			dependency "io.reactivex:rxjava:1.3.8"
 			dependency "io.reactivex:rxjava-reactive-streams:1.2.1"
 			dependency "io.reactivex.rxjava2:rxjava:2.2.21"
-			dependency "io.reactivex.rxjava3:rxjava:3.0.11"
+			dependency "io.reactivex.rxjava3:rxjava:3.0.13"
 			dependency "io.projectreactor.tools:blockhound:1.0.4.RELEASE"
 
 			dependency "com.caucho:hessian:4.0.63"
-			dependency "com.fasterxml:aalto-xml:1.2.2"
-			dependency("com.fasterxml.woodstox:woodstox-core:6.2.4") {
+			dependency "com.fasterxml:aalto-xml:1.3.0"
+			dependency("com.fasterxml.woodstox:woodstox-core:6.2.6") {
 				exclude group: "stax", name: "stax-api"
 			}
-			dependency "com.google.code.gson:gson:2.8.6"
-			dependency "com.google.protobuf:protobuf-java-util:3.15.5"
+			dependency "com.google.code.gson:gson:2.8.7"
+			dependency "com.google.protobuf:protobuf-java-util:3.17.3"
 			dependency "com.googlecode.protobuf-java-format:protobuf-java-format:1.4"
-			dependency("com.thoughtworks.xstream:xstream:1.4.15") {
+			dependency("com.thoughtworks.xstream:xstream:1.4.17") {
 				exclude group: "xpp3", name: "xpp3_min"
 				exclude group: "xmlpull", name: "xmlpull"
 			}
@@ -89,20 +91,16 @@ configure(allprojects) { project ->
 				entry 'jibx-run'
 			}
 			dependency "org.ogce:xpp3:1.1.6"
-			dependency "org.yaml:snakeyaml:1.28"
-			dependencySet(group: 'org.jetbrains.kotlinx', version: '1.0.1') {
-				entry 'kotlinx-serialization-core'
-				entry 'kotlinx-serialization-json'
-			}
+			dependency "org.yaml:snakeyaml:1.29"
 
 			dependency "com.h2database:h2:1.4.200"
-			dependency "com.github.ben-manes.caffeine:caffeine:2.9.0"
-			dependency "com.github.librepdf:openpdf:1.3.25"
+			dependency "com.github.ben-manes.caffeine:caffeine:2.9.1"
+			dependency "com.github.librepdf:openpdf:1.3.26"
 			dependency "com.rometools:rome:1.15.0"
 			dependency "commons-io:commons-io:2.5"
 			dependency "io.vavr:vavr:0.10.3"
 			dependency "net.sf.jopt-simple:jopt-simple:5.0.4"
-			dependencySet(group: 'org.apache.activemq', version: '5.16.1') {
+			dependencySet(group: 'org.apache.activemq', version: '5.16.2') {
 				entry 'activemq-broker'
 				entry('activemq-kahadb-store') {
 					exclude group: "org.springframework", name: "spring-context"
@@ -117,30 +115,30 @@ configure(allprojects) { project ->
 			}
 			dependency "org.apache.poi:poi-ooxml:4.1.2"
 			dependency "org.apache-extras.beanshell:bsh:2.0b6"
-			dependency "org.freemarker:freemarker:2.3.30"
-			dependency "org.hsqldb:hsqldb:2.5.1"
+			dependency "org.freemarker:freemarker:2.3.31"
+			dependency "org.hsqldb:hsqldb:2.5.2"
 			dependency "org.quartz-scheduler:quartz:2.3.2"
 			dependency "org.codehaus.fabric3.api:commonj:1.1.0"
 			dependency "net.sf.ehcache:ehcache:2.10.6"
 			dependency "org.ehcache:jcache:1.0.1"
 			dependency "org.ehcache:ehcache:3.4.0"
-			dependency "org.hibernate:hibernate-core:5.4.29.Final"
+			dependency "org.hibernate:hibernate-core:5.4.32.Final"
 			dependency "org.hibernate:hibernate-validator:6.2.0.Final"
-			dependency "org.webjars:webjars-locator-core:0.46"
+			dependency "org.webjars:webjars-locator-core:0.47"
 			dependency "org.webjars:underscorejs:1.8.3"
 
-			dependencySet(group: 'org.apache.tomcat', version: '9.0.43') {
+			dependencySet(group: 'org.apache.tomcat', version: '9.0.50') {
 				entry 'tomcat-util'
 				entry('tomcat-websocket') {
 					exclude group: "org.apache.tomcat", name: "tomcat-websocket-api"
 					exclude group: "org.apache.tomcat", name: "tomcat-servlet-api"
 				}
 			}
-			dependencySet(group: 'org.apache.tomcat.embed', version: '9.0.43') {
+			dependencySet(group: 'org.apache.tomcat.embed', version: '9.0.50') {
 				entry 'tomcat-embed-core'
 				entry 'tomcat-embed-websocket'
 			}
-			dependencySet(group: 'io.undertow', version: '2.2.5.Final') {
+			dependencySet(group: 'io.undertow', version: '2.2.8.Final') {
 				entry 'undertow-core'
 				entry('undertow-websockets-jsr') {
 					exclude group: "org.jboss.spec.javax.websocket", name: "jboss-websocket-api_1.1_spec"
@@ -161,11 +159,11 @@ configure(allprojects) { project ->
 			dependency("org.apache.httpcomponents:httpasyncclient:4.1.4") {
 				exclude group: "commons-logging", name: "commons-logging"
 			}
-			dependency 'org.apache.httpcomponents.client5:httpclient5:5.0.3'
-			dependency 'org.apache.httpcomponents.core5:httpcore5-reactive:5.0.3'
-			dependency "org.eclipse.jetty:jetty-reactive-httpclient:1.1.6"
+			dependency 'org.apache.httpcomponents.client5:httpclient5:5.1'
+			dependency 'org.apache.httpcomponents.core5:httpcore5-reactive:5.1.1'
+			dependency "org.eclipse.jetty:jetty-reactive-httpclient:1.1.9"
 
-			dependency "org.jruby:jruby:9.2.16.0"
+			dependency "org.jruby:jruby:9.2.19.0"
 			dependency "org.python:jython-standalone:2.7.1"
 			dependency "org.mozilla:rhino:1.7.11"
 
@@ -188,28 +186,28 @@ configure(allprojects) { project ->
 			dependency("de.bechte.junit:junit-hierarchicalcontextrunner:4.12.1") {
 				exclude group: "junit", name: "junit"
 			}
-			dependency "org.testng:testng:7.3.0"
+			dependency "org.testng:testng:7.4.0"
 			dependency "org.hamcrest:hamcrest:2.1"
 			dependency "org.awaitility:awaitility:3.1.6"
-			dependency "org.assertj:assertj-core:3.19.0"
+			dependency "org.assertj:assertj-core:3.20.2"
 			dependencySet(group: 'org.xmlunit', version: '2.8.2') {
 				entry 'xmlunit-assertj'
 				entry('xmlunit-matchers') {
 					exclude group: "org.hamcrest", name: "hamcrest-core"
 				}
 			}
-			dependencySet(group: 'org.mockito', version: '3.8.0') {
+			dependencySet(group: 'org.mockito', version: '3.11.0') {
 				entry('mockito-core') {
 					exclude group: "org.hamcrest", name: "hamcrest-core"
 				}
 				entry 'mockito-junit-jupiter'
 			}
-			dependency "io.mockk:mockk:1.10.2"
+			dependency "io.mockk:mockk:1.11.0"
 
-			dependency("net.sourceforge.htmlunit:htmlunit:2.47.1") {
+			dependency("net.sourceforge.htmlunit:htmlunit:2.51.0") {
 				exclude group: "commons-logging", name: "commons-logging"
 			}
-			dependency("org.seleniumhq.selenium:htmlunit-driver:2.47.1") {
+			dependency("org.seleniumhq.selenium:htmlunit-driver:2.51.0") {
 				exclude group: "commons-logging", name: "commons-logging"
 			}
 			dependency("org.seleniumhq.selenium:selenium-java:3.141.59") {
@@ -238,7 +236,7 @@ configure(allprojects) { project ->
 			dependency "com.ibm.websphere:uow:6.0.2.17"
 			dependency "com.jamonapi:jamon:2.82"
 			dependency "joda-time:joda-time:2.10.10"
-			dependency "org.eclipse.persistence:org.eclipse.persistence.jpa:2.7.8"
+			dependency "org.eclipse.persistence:org.eclipse.persistence.jpa:2.7.9"
 			dependency "org.javamoney:moneta:1.3"
 
 			dependency "com.sun.activation:javax.activation:1.2.0"
@@ -318,7 +316,7 @@ configure([rootProject] + javaProjects) { project ->
 			kotlinOptions {
 				languageVersion = "1.3"
 				apiVersion = "1.3"
-				freeCompilerArgs = ["-Xjsr305=strict"]
+				freeCompilerArgs = ["-Xjsr305=strict", "-Xsuppress-version-warnings", "-Xopt-in=kotlin.RequiresOptIn"]
 				allWarningsAsErrors = true
 			}
 		}
@@ -338,7 +336,7 @@ configure([rootProject] + javaProjects) { project ->
 	}
 
 	checkstyle {
-		toolVersion = "8.41"
+		toolVersion = "8.44"
 		configDirectory.set(rootProject.file("src/checkstyle"))
 	}
 
@@ -377,10 +375,10 @@ configure([rootProject] + javaProjects) { project ->
 			"https://fasterxml.github.io/jackson-core/javadoc/2.10/",
 			"https://fasterxml.github.io/jackson-databind/javadoc/2.10/",
 			"https://fasterxml.github.io/jackson-dataformat-xml/javadoc/2.10/",
-			"https://hc.apache.org/httpcomponents-client-ga/httpclient/apidocs/",
+			"https://hc.apache.org/httpcomponents-client-5.1.x/current/httpclient5/apidocs/",
 			"https://projectreactor.io/docs/test/release/api/",
 			"https://junit.org/junit4/javadoc/4.13.2/",
-			"https://junit.org/junit5/docs/5.7.1/api/"
+			"https://junit.org/junit5/docs/5.7.2/api/"
 	] as String[]
 }
 

ci/images/setup.sh

@@ -14,7 +14,7 @@ rm -rf /var/lib/apt/lists/*
 
 curl https://raw.githubusercontent.com/spring-io/concourse-java-scripts/v0.0.4/concourse-java.sh > /opt/concourse-java.sh
 
-curl --output /opt/concourse-release-scripts.jar https://repo.spring.io/release/io/spring/concourse/releasescripts/concourse-release-scripts/0.3.0/concourse-release-scripts-0.3.0.jar
+curl --output /opt/concourse-release-scripts.jar https://repo.spring.io/release/io/spring/concourse/releasescripts/concourse-release-scripts/0.3.2/concourse-release-scripts-0.3.2.jar
 
 ###########################################################
 # JAVA

ci/parameters.yml

@@ -5,7 +5,7 @@ github-repo: "https://github.com/spring-projects/spring-framework.git"
 github-repo-name: "spring-projects/spring-framework"
 docker-hub-organization: "springci"
 artifactory-server: "https://repo.spring.io"
-branch: "master"
+branch: "main"
 milestone: "5.3.x"
 build-name: "spring-framework"
 pipeline-name: "spring-framework"

ci/pipeline.yml

@@ -9,8 +9,8 @@ anchors:
     GRADLE_ENTERPRISE_CACHE_USERNAME: ((gradle_enterprise_cache_user.username))
     GRADLE_ENTERPRISE_CACHE_PASSWORD: ((gradle_enterprise_cache_user.password))
   sonatype-task-params: &sonatype-task-params
-    SONATYPE_USER_TOKEN: ((sonatype-user-token))
-    SONATYPE_PASSWORD_TOKEN: ((sonatype-user-token-password))
+    SONATYPE_USERNAME: ((sonatype-username))
+    SONATYPE_PASSWORD: ((sonatype-password))
     SONATYPE_URL: ((sonatype-url))
     SONATYPE_STAGING_PROFILE_ID: ((sonatype-staging-profile-id))
   artifactory-task-params: &artifactory-task-params
@@ -18,9 +18,6 @@ anchors:
     ARTIFACTORY_USERNAME: ((artifactory-username))
     ARTIFACTORY_PASSWORD: ((artifactory-password))
   build-project-task-params: &build-project-task-params
-    privileged: true
-    timeout: ((task-timeout))
-    params:
       BRANCH: ((branch))
       <<: *gradle-enterprise-task-params
   docker-resource-source: &docker-resource-source
@@ -54,6 +51,11 @@ resource_types:
   source:
     repository: dpb587/github-status-resource
     tag: master
+- name: pull-request
+  type: registry-image
+  source:
+    repository: teliaoss/github-pr-resource
+    tag: v0.23.0
 - name: slack-notification
   type: registry-image
   source:
@@ -93,6 +95,14 @@ resources:
     username: ((artifactory-username))
     password: ((artifactory-password))
     build_name: ((build-name))
+- name: git-pull-request
+  type: pull-request
+  icon: source-pull
+  source:
+    access_token: ((github-ci-pull-request-token))
+    repository: ((github-repo-name))
+    base_branch: ((branch))
+    ignore_paths: ["ci/*"]
 - name: repo-status-build
   type: github-status-resource
   icon: eye-check-outline
@@ -162,7 +172,10 @@ jobs:
     - task: build-project
       image: ci-image
       file: git-repo/ci/tasks/build-project.yml
-      <<: *build-project-task-params
+      privileged: true
+      timeout: ((task-timeout))
+      params:
+        <<: *build-project-task-params
     on_failure:
       do:
       - put: repo-status-build
@@ -217,10 +230,11 @@ jobs:
     - task: check-project
       image: ci-image
       file: git-repo/ci/tasks/check-project.yml
+      privileged: true
+      timeout: ((task-timeout))
       params:
-        MAIN_TOOLCHAIN: 8
         TEST_TOOLCHAIN: 11
-      <<: *build-project-task-params
+        <<: *build-project-task-params
     on_failure:
       do:
       - put: repo-status-jdk11-build
@@ -244,10 +258,11 @@ jobs:
       - task: check-project
         image: ci-image
         file: git-repo/ci/tasks/check-project.yml
+        privileged: true
+        timeout: ((task-timeout))
         params:
-          MAIN_TOOLCHAIN: 8
           TEST_TOOLCHAIN: 15
-        <<: *build-project-task-params
+          <<: *build-project-task-params
       on_failure:
         do:
           - put: repo-status-jdk15-build
@@ -257,6 +272,37 @@ jobs:
               <<: *slack-fail-params
     - put: repo-status-jdk15-build
       params: { state: "success", commit: "git-repo" }
+- name: build-pull-requests
+  serial: true
+  public: true
+  plan:
+    - get: ci-image
+    - get: git-repo
+      resource: git-pull-request
+      trigger: true
+      version: every
+    - do:
+      - put: git-pull-request
+        params:
+          path: git-repo
+          status: pending
+      - task: build-pr
+        image: ci-image
+        file: git-repo/ci/tasks/build-pr.yml
+        privileged: true
+        timeout: ((task-timeout))
+        params:
+          <<: *build-project-task-params
+      on_success:
+        put: git-pull-request
+        params:
+          path: git-repo
+          status: success
+      on_failure:
+        put: git-pull-request
+        params:
+          path: git-repo
+          status: failure
 - name: stage-milestone
   serial: true
   plan:
@@ -376,7 +422,7 @@ jobs:
       trigger: false
       passed: [stage-release]
       params:
-        download_artifacts: false
+        download_artifacts: true
         save_build_info: true
     - task: promote
       image: ci-image
@@ -412,3 +458,5 @@ groups:
   jobs: ["stage-milestone", "stage-rc", "stage-release", "promote-milestone", "promote-rc", "promote-release", "create-github-release"]
 - name: "ci-images"
   jobs: ["build-ci-images"]
+- name: "pull-requests"
+  jobs: [ "build-pull-requests" ]

ci/scripts/build-pr.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+set -e
+
+source $(dirname $0)/common.sh
+
+pushd git-repo > /dev/null
+./gradlew -Dorg.gradle.internal.launcher.welcomeMessageEnabled=false --no-daemon --max-workers=4 check
+popd > /dev/null

ci/scripts/check-project.sh

@@ -4,6 +4,6 @@ set -e
 source $(dirname $0)/common.sh
 
 pushd git-repo > /dev/null
-./gradlew -Dorg.gradle.internal.launcher.welcomeMessageEnabled=false -Dorg.gradle.java.installations.fromEnv=JDK11,JDK15 \
-  -PmainToolchain=$MAIN_TOOLCHAIN -PtestToolchain=$TEST_TOOLCHAIN --no-daemon --max-workers=4 check
+./gradlew -Dorg.gradle.internal.launcher.welcomeMessageEnabled=false -Porg.gradle.java.installations.fromEnv=JDK11,JDK15 \
+  -PmainToolchain=${MAIN_TOOLCHAIN} -PtestToolchain=${TEST_TOOLCHAIN} --no-daemon --max-workers=4 check
 popd > /dev/null

ci/tasks/build-pr.yml

@@ -0,0 +1,19 @@
+---
+platform: linux
+inputs:
+- name: git-repo
+caches:
+- path: gradle
+params:
+  BRANCH:
+  CI: true
+  GRADLE_ENTERPRISE_ACCESS_KEY:
+  GRADLE_ENTERPRISE_CACHE_USERNAME:
+  GRADLE_ENTERPRISE_CACHE_PASSWORD:
+  GRADLE_ENTERPRISE_URL: https://ge.spring.io
+run:
+  path: bash
+  args:
+    - -ec
+    - |
+      ${PWD}/git-repo/ci/scripts/build-pr.sh

ci/tasks/generate-changelog.yml

@@ -1,7 +1,7 @@
 ---
 platform: linux
 image_resource:
-  type: docker-image
+  type: registry-image
   source:
     repository: springio/github-changelog-generator
     tag: '0.0.6'

ci/tasks/promote-version.yml

@@ -10,8 +10,8 @@ params:
   ARTIFACTORY_SERVER:
   ARTIFACTORY_USERNAME:
   ARTIFACTORY_PASSWORD:
-  SONATYPE_USER_TOKEN:
-  SONATYPE_PASSWORD_TOKEN:
+  SONATYPE_USER:
+  SONATYPE_PASSWORD:
   SONATYPE_URL:
   SONATYPE_STAGING_PROFILE_ID:
 run:

gradle.properties

@@ -1,4 +1,4 @@
-version=5.3.5-SNAPSHOT
+version=5.3.9
 org.gradle.jvmargs=-Xmx1536M
 org.gradle.caching=true
 org.gradle.parallel=true

gradle/docs.gradle

@@ -103,9 +103,12 @@ dokka {
 		externalDocumentationLink {
 			url = new URL("https://www.reactive-streams.org/reactive-streams-1.0.1-javadoc/")
 		}
+/*
+		This link causes errors, removing to fix the build.
 		externalDocumentationLink {
 			url = new URL("https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/")
 		}
+*/
 		externalDocumentationLink {
 			url = new URL("https://r2dbc.io/spec/0.8.3.RELEASE/api/")
 		}
@@ -127,6 +130,8 @@ task extractDocResources(type: Copy, dependsOn: downloadResources) {
 }
 
 asciidoctorj {
+	def docRoot = 'https://docs.spring.io'
+	def docsSpringFramework = "${docRoot}/spring-framework/docs/${project.version}"
 	version = '2.4.1'
 	fatalWarnings ".*"
 	options doctype: 'book', eruby: 'erubis'
@@ -143,7 +148,11 @@ asciidoctorj {
 			'highlightjs-theme': 'googlecode',
 			stylesdir: 'css/',
 			stylesheet: 'stylesheet.css',
-			'spring-version': project.version
+			'spring-version': project.version,
+			'spring-framework-main-code': 'https://github.com/spring-projects/spring-framework/tree/main',
+			'doc-root': docRoot,
+			'docs-spring-framework': docsSpringFramework,
+			'api-spring-framework': "${docsSpringFramework}/javadoc-api/org/springframework"
 	])
 }
 
@@ -154,6 +163,9 @@ asciidoctorj {
 asciidoctor {
 	baseDirFollowsSourceDir()
 	configurations 'asciidoctorExt'
+	attributes([
+			noheader: '' // custom header in docinfo-header.html
+	])
 	sources {
 		include '*.adoc'
 	}

gradle/ide.gradle

@@ -108,21 +108,3 @@ task eclipseBuildship(type: Copy) {
 tasks["eclipseJdt"].dependsOn(eclipseJdtPrepare)
 tasks["cleanEclipse"].dependsOn(cleanEclipseJdtUi)
 tasks["eclipse"].dependsOn(eclipseSettings, eclipseWstComponent)
-
-
-// Filter 'build' folder
-eclipse.project.file.withXml {
-	def node = it.asNode()
-
-	def filteredResources = node.get("filteredResources")
-	if(filteredResources) {
-		node.remove(filteredResources)
-	}
-	def filterNode = node.appendNode("filteredResources").appendNode("filter")
-	filterNode.appendNode("id", "1359048889071")
-	filterNode.appendNode("name", "")
-	filterNode.appendNode("type", "30")
-	def matcherNode = filterNode.appendNode("matcher")
-	matcherNode.appendNode("id", "org.eclipse.ui.ide.multiFilter")
-	matcherNode.appendNode("arguments", "1.0-projectRelativePath-matches-false-false-build")
-}

gradle/spring-module.gradle

@@ -4,12 +4,12 @@ apply plugin: 'org.springframework.build.optional-dependencies'
 // Uncomment the following for Shadow support in the jmhJar block.
 // Currently commented out due to ZipException: archive is not a ZIP archive
 // apply plugin: 'com.github.johnrengelman.shadow'
-apply plugin: 'me.champeau.gradle.jmh'
+apply plugin: 'me.champeau.jmh'
 apply from: "$rootDir/gradle/publications.gradle"
 
 dependencies {
-	jmh 'org.openjdk.jmh:jmh-core:1.25'
-	jmh 'org.openjdk.jmh:jmh-generator-annprocess:1.25'
+	jmh 'org.openjdk.jmh:jmh-core:1.28'
+	jmh 'org.openjdk.jmh:jmh-generator-annprocess:1.28'
 	jmh 'net.sf.jopt-simple:jopt-simple:4.6'
 }
 

gradle/toolchains.gradle

@@ -11,6 +11,8 @@
  *     <li>a JDK11 toolchain for compiling and running the test SourceSet
  * </ul>
  *
+ * By default, the build will fall back to using the current JDK and 1.8 language level for all sourceSets.
+ *
  * Gradle will automatically detect JDK distributions in well-known locations.
  * The following command will list the detected JDKs on the host.
  * {@code
@@ -23,21 +25,41 @@
  * /opt/openjdk/java11
  * $ echo JDK15
  * /opt/openjdk/java15
- * $ ./gradlew -Dorg.gradle.java.installations.fromEnv=JDK11,JDK15 check
+ * $ ./gradlew -Porg.gradle.java.installations.fromEnv=JDK11,JDK15 check
  * }
  *
  * @author Brian Clozel
+ * @author Sam Brannen
  */
-def mainToolchain = 'mainToolchain'
-def testToolchain = 'testToolchain'
+
+def mainToolchainConfigured() {
+	return project.hasProperty('mainToolchain') && project.mainToolchain
+}
+
+def testToolchainConfigured() {
+	return project.hasProperty('testToolchain') && project.testToolchain
+}
+
+def mainToolchainLanguageVersion() {
+	if (mainToolchainConfigured()) {
+		return JavaLanguageVersion.of(project.mainToolchain.toString())
+	}
+	return JavaLanguageVersion.of(8)
+}
+
+def testToolchainLanguageVersion() {
+	if (testToolchainConfigured()) {
+		return JavaLanguageVersion.of(project.testToolchain.toString())
+	}
+	return mainToolchainLanguageVersion()
+}
 
 plugins.withType(JavaPlugin) {
-	// Configure the Java Toolchain if the 'mainToolchain' property is defined
-	if (project.hasProperty(mainToolchain)) {
-		def mainLanguageVersion = JavaLanguageVersion.of(project.property(mainToolchain).toString())
+	// Configure the Java Toolchain if the 'mainToolchain' is configured
+	if (mainToolchainConfigured()) {
 		java {
 			toolchain {
-				languageVersion = mainLanguageVersion
+				languageVersion = mainToolchainLanguageVersion()
 			}
 		}
 	}
@@ -48,8 +70,8 @@ plugins.withType(JavaPlugin) {
 		}
 	}
 	// Configure a specific Java Toolchain for compiling and running tests if the 'testToolchain' property is defined
-	if (project.hasProperty(testToolchain)) {
-		def testLanguageVersion = JavaLanguageVersion.of(project.property(testToolchain).toString());
+	if (testToolchainConfigured()) {
+		def testLanguageVersion = testToolchainLanguageVersion()
 		tasks.withType(JavaCompile).matching { it.name.contains("Test") }.configureEach {
 			javaCompiler = javaToolchains.compilerFor {
 				languageVersion = testLanguageVersion
@@ -65,17 +87,17 @@ plugins.withType(JavaPlugin) {
 
 plugins.withType(GroovyPlugin) {
 	// Fallback to JDK8
-	if (!project.hasProperty(mainToolchain)) {
+	if (!mainToolchainConfigured()) {
 		compileGroovy {
 			sourceCompatibility = JavaVersion.VERSION_1_8
 		}
 	}
 }
 
-// Configure the Kotlin compiler if the 'mainToolchain' property is defined
 pluginManager.withPlugin("kotlin") {
-	if (project.hasProperty(mainToolchain)) {
-		def mainLanguageVersion = JavaLanguageVersion.of(project.property(mainToolchain).toString());
+	// Configure the Kotlin compiler if the 'mainToolchain' property is defined
+	if (mainToolchainConfigured()) {
+		def mainLanguageVersion = mainToolchainLanguageVersion()
 		def compiler = javaToolchains.compilerFor {
 			languageVersion = mainLanguageVersion
 		}
@@ -96,15 +118,21 @@ pluginManager.withPlugin("kotlin") {
 		}
 	}
 	else {
+		// Fallback to JDK8
 		compileKotlin {
 			kotlinOptions {
 				jvmTarget = '1.8'
 			}
 		}
+		compileTestKotlin {
+			kotlinOptions {
+				jvmTarget = '1.8'
+			}
+		}
 	}
-	
-	if (project.hasProperty(testToolchain)) {
-		def testLanguageVersion = JavaLanguageVersion.of(project.property(testToolchain).toString());
+
+	if (testToolchainConfigured()) {
+		def testLanguageVersion = testToolchainLanguageVersion()
 		def compiler = javaToolchains.compilerFor {
 			languageVersion = testLanguageVersion
 		}
@@ -117,11 +145,38 @@ pluginManager.withPlugin("kotlin") {
 			}
 		}
 	}
-	else {
-		compileTestKotlin {
-			kotlinOptions {
-				jvmTarget = '1.8'
+}
+
+// Configure the JMH plugin to use the toolchain for generating and running JMH bytecode
+pluginManager.withPlugin("me.champeau.jmh") {
+	if (mainToolchainConfigured() || testToolchainConfigured()) {
+		tasks.matching { it.name.contains('jmh') && it.hasProperty('javaLauncher') }.configureEach {
+			javaLauncher.set(javaToolchains.launcherFor {
+				languageVersion.set(testToolchainLanguageVersion())
+			})
+		}
+		tasks.withType(JavaCompile).matching { it.name.contains("Jmh") }.configureEach {
+			javaCompiler = javaToolchains.compilerFor {
+				languageVersion = testToolchainLanguageVersion()
 			}
 		}
 	}
-}
+}
+
+// Store resolved Toolchain JVM information as custom values in the build scan.
+rootProject.ext {
+	resolvedMainToolchain = false
+	resolvedTestToolchain = false
+}
+gradle.taskGraph.afterTask { Task task, TaskState state ->
+	if (mainToolchainConfigured() && !resolvedMainToolchain && task instanceof JavaCompile && task.javaCompiler.isPresent()) {
+		def metadata = task.javaCompiler.get().metadata
+		task.project.buildScan.value('Main toolchain', "$metadata.vendor $metadata.languageVersion ($metadata.installationPath)")
+		resolvedMainToolchain = true
+	}
+	if (testToolchainConfigured() && !resolvedTestToolchain && task instanceof Test && task.javaLauncher.isPresent()) {
+		def metadata = task.javaLauncher.get().metadata
+		task.project.buildScan.value('Test toolchain', "$metadata.vendor $metadata.languageVersion ($metadata.installationPath)")
+		resolvedTestToolchain = true
+	}
+}

settings.gradle

@@ -6,7 +6,7 @@ pluginManagement {
 }
 
 plugins {
-	id "com.gradle.enterprise" version "3.5.1"
+	id "com.gradle.enterprise" version "3.6.1"
 	id "io.spring.ge.conventions" version "0.0.7"
 }
 
@@ -45,12 +45,6 @@ rootProject.children.each {project ->
 settings.gradle.projectsLoaded {
 	gradleEnterprise {
 		buildScan {
-			if (settings.gradle.rootProject.hasProperty('mainToolchain')) {
-				value("Main toolchain", 'JDK' + settings.gradle.rootProject.getProperty('mainToolchain'))
-			}
-			if (settings.gradle.rootProject.hasProperty('testToolchain')) {
-				value("Test toolchain", 'JDK' + settings.gradle.rootProject.getProperty('testToolchain'))
-			}
 			File buildDir = settings.gradle.rootProject.getBuildDir()
 			buildDir.mkdirs()
 			new File(buildDir, "build-scan-uri.txt").text = "(build scan not generated)"

spring-aop/src/main/java/org/springframework/aop/aspectj/AspectJAdviceParameterNameDiscoverer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -625,7 +625,7 @@ public class AspectJAdviceParameterNameDiscoverer implements ParameterNameDiscov
 			StringBuilder sb = new StringBuilder();
 			if (bodyStart >= 0 && bodyStart != (currentToken.length() - 1)) {
 				sb.append(currentToken.substring(bodyStart + 1));
-				sb.append(" ");
+				sb.append(' ');
 			}
 			numTokensConsumed++;
 			int currentIndex = startIndex + numTokensConsumed;
@@ -645,7 +645,7 @@ public class AspectJAdviceParameterNameDiscoverer implements ParameterNameDiscov
 					toAppend = toAppend.substring(1);
 				}
 				sb.append(toAppend);
-				sb.append(" ");
+				sb.append(' ');
 				currentIndex++;
 				numTokensConsumed++;
 			}

spring-aop/src/main/java/org/springframework/aop/aspectj/AspectJExpressionPointcut.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -547,7 +547,7 @@ public class AspectJExpressionPointcut extends AbstractExpressionPointcut
 		StringBuilder sb = new StringBuilder("AspectJExpressionPointcut: (");
 		for (int i = 0; i < this.pointcutParameterTypes.length; i++) {
 			sb.append(this.pointcutParameterTypes[i].getName());
-			sb.append(" ");
+			sb.append(' ');
 			sb.append(this.pointcutParameterNames[i]);
 			if ((i+1) < this.pointcutParameterTypes.length) {
 				sb.append(", ");

spring-aop/src/main/java/org/springframework/aop/aspectj/MethodInvocationProceedingJoinPoint.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -255,19 +255,19 @@ public class MethodInvocationProceedingJoinPoint implements ProceedingJoinPoint,
 			StringBuilder sb = new StringBuilder();
 			if (includeModifier) {
 				sb.append(Modifier.toString(getModifiers()));
-				sb.append(" ");
+				sb.append(' ');
 			}
 			if (includeReturnTypeAndArgs) {
 				appendType(sb, getReturnType(), useLongReturnAndArgumentTypeName);
-				sb.append(" ");
+				sb.append(' ');
 			}
 			appendType(sb, getDeclaringType(), useLongTypeName);
-			sb.append(".");
+			sb.append('.');
 			sb.append(getMethod().getName());
-			sb.append("(");
+			sb.append('(');
 			Class<?>[] parametersTypes = getParameterTypes();
 			appendTypes(sb, parametersTypes, includeReturnTypeAndArgs, useLongReturnAndArgumentTypeName);
-			sb.append(")");
+			sb.append(')');
 			return sb.toString();
 		}
 
@@ -278,7 +278,7 @@ public class MethodInvocationProceedingJoinPoint implements ProceedingJoinPoint,
 				for (int size = types.length, i = 0; i < size; i++) {
 					appendType(sb, types[i], useLongReturnAndArgumentTypeName);
 					if (i < size - 1) {
-						sb.append(",");
+						sb.append(',');
 					}
 				}
 			}

spring-aop/src/main/java/org/springframework/aop/framework/AopProxyUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,7 +19,9 @@ package org.springframework.aop.framework;
 import java.lang.reflect.Array;
 import java.lang.reflect.Method;
 import java.lang.reflect.Proxy;
+import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.List;
 
 import org.springframework.aop.SpringProxy;
 import org.springframework.aop.TargetClassAware;
@@ -29,7 +31,9 @@ import org.springframework.aop.target.SingletonTargetSource;
 import org.springframework.core.DecoratingProxy;
 import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
+import org.springframework.util.ClassUtils;
 import org.springframework.util.ObjectUtils;
+import org.springframework.util.ReflectionUtils;
 
 /**
  * Utility methods for AOP proxy factories.
@@ -44,6 +48,11 @@ import org.springframework.util.ObjectUtils;
  */
 public abstract class AopProxyUtils {
 
+	// JDK 17 Class.isSealed() method available?
+	@Nullable
+	private static final Method isSealedMethod = ClassUtils.getMethodIfAvailable(Class.class, "isSealed");
+
+
 	/**
 	 * Obtain the singleton target object behind the given proxy, if any.
 	 * @param candidate the (potential) proxy to check
@@ -130,34 +139,23 @@ public abstract class AopProxyUtils {
 				specifiedInterfaces = advised.getProxiedInterfaces();
 			}
 		}
-		boolean addSpringProxy = !advised.isInterfaceProxied(SpringProxy.class);
-		boolean addAdvised = !advised.isOpaque() && !advised.isInterfaceProxied(Advised.class);
-		boolean addDecoratingProxy = (decoratingProxy && !advised.isInterfaceProxied(DecoratingProxy.class));
-		int nonUserIfcCount = 0;
-		if (addSpringProxy) {
-			nonUserIfcCount++;
+		List<Class<?>> proxiedInterfaces = new ArrayList<>(specifiedInterfaces.length + 3);
+		for (Class<?> ifc : specifiedInterfaces) {
+			// Only non-sealed interfaces are actually eligible for JDK proxying (on JDK 17)
+			if (isSealedMethod == null || Boolean.FALSE.equals(ReflectionUtils.invokeMethod(isSealedMethod, ifc))) {
+				proxiedInterfaces.add(ifc);
+			}
 		}
-		if (addAdvised) {
-			nonUserIfcCount++;
+		if (!advised.isInterfaceProxied(SpringProxy.class)) {
+			proxiedInterfaces.add(SpringProxy.class);
 		}
-		if (addDecoratingProxy) {
-			nonUserIfcCount++;
+		if (!advised.isOpaque() && !advised.isInterfaceProxied(Advised.class)) {
+			proxiedInterfaces.add(Advised.class);
 		}
-		Class<?>[] proxiedInterfaces = new Class<?>[specifiedInterfaces.length + nonUserIfcCount];
-		System.arraycopy(specifiedInterfaces, 0, proxiedInterfaces, 0, specifiedInterfaces.length);
-		int index = specifiedInterfaces.length;
-		if (addSpringProxy) {
-			proxiedInterfaces[index] = SpringProxy.class;
-			index++;
+		if (decoratingProxy && !advised.isInterfaceProxied(DecoratingProxy.class)) {
+			proxiedInterfaces.add(DecoratingProxy.class);
 		}
-		if (addAdvised) {
-			proxiedInterfaces[index] = Advised.class;
-			index++;
-		}
-		if (addDecoratingProxy) {
-			proxiedInterfaces[index] = DecoratingProxy.class;
-		}
-		return proxiedInterfaces;
+		return ClassUtils.toClassArray(proxiedInterfaces);
 	}
 
 	/**

spring-aop/src/main/java/org/springframework/aop/framework/autoproxy/AbstractAutoProxyCreator.java

@@ -17,6 +17,7 @@
 package org.springframework.aop.framework.autoproxy;
 
 import java.lang.reflect.Constructor;
+import java.lang.reflect.Proxy;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
@@ -440,7 +441,17 @@ public abstract class AbstractAutoProxyCreator extends ProxyProcessorSupport
 		ProxyFactory proxyFactory = new ProxyFactory();
 		proxyFactory.copyFrom(this);
 
-		if (!proxyFactory.isProxyTargetClass()) {
+		if (proxyFactory.isProxyTargetClass()) {
+			// Explicit handling of JDK proxy targets (for introduction advice scenarios)
+			if (Proxy.isProxyClass(beanClass)) {
+				// Must allow for introductions; can't just set interfaces to the proxy's interfaces only.
+				for (Class<?> ifc : beanClass.getInterfaces()) {
+					proxyFactory.addInterface(ifc);
+				}
+			}
+		}
+		else {
+			// No proxyTargetClass flag enforced, let's apply our default checks...
 			if (shouldProxyTargetClass(beanClass, beanName)) {
 				proxyFactory.setProxyTargetClass(true);
 			}
@@ -510,7 +521,7 @@ public abstract class AbstractAutoProxyCreator extends ProxyProcessorSupport
 		List<Object> allInterceptors = new ArrayList<>();
 		if (specificInterceptors != null) {
 			if (specificInterceptors.length > 0) {
-				// specificInterceptors may equals PROXY_WITHOUT_ADDITIONAL_INTERCEPTORS
+				// specificInterceptors may equal PROXY_WITHOUT_ADDITIONAL_INTERCEPTORS
 				allInterceptors.addAll(Arrays.asList(specificInterceptors));
 			}
 			if (commonInterceptors.length > 0) {

spring-aop/src/main/java/org/springframework/aop/support/AbstractBeanFactoryPointcutAdvisor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -137,7 +137,7 @@ public abstract class AbstractBeanFactoryPointcutAdvisor extends AbstractPointcu
 		StringBuilder sb = new StringBuilder(getClass().getName());
 		sb.append(": advice ");
 		if (this.adviceBeanName != null) {
-			sb.append("bean '").append(this.adviceBeanName).append("'");
+			sb.append("bean '").append(this.adviceBeanName).append('\'');
 		}
 		else {
 			sb.append(this.advice);

spring-aop/src/main/java/org/springframework/aop/support/DefaultIntroductionAdvisor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -71,7 +71,8 @@ public class DefaultIntroductionAdvisor implements IntroductionAdvisor, ClassFil
 		if (introductionInfo != null) {
 			Class<?>[] introducedInterfaces = introductionInfo.getInterfaces();
 			if (introducedInterfaces.length == 0) {
-				throw new IllegalArgumentException("IntroductionAdviceSupport implements no interfaces");
+				throw new IllegalArgumentException(
+						"IntroductionInfo defines no interfaces to introduce: " + introductionInfo);
 			}
 			for (Class<?> ifc : introducedInterfaces) {
 				addInterface(ifc);

spring-aop/src/main/java/org/springframework/aop/target/AbstractBeanFactoryBasedTargetSource.java

@@ -191,9 +191,9 @@ public abstract class AbstractBeanFactoryBasedTargetSource implements TargetSour
 	@Override
 	public String toString() {
 		StringBuilder sb = new StringBuilder(getClass().getSimpleName());
-		sb.append(" for target bean '").append(this.targetBeanName).append("'");
+		sb.append(" for target bean '").append(this.targetBeanName).append('\'');
 		if (this.targetClass != null) {
-			sb.append(" of type [").append(this.targetClass.getName()).append("]");
+			sb.append(" of type [").append(this.targetClass.getName()).append(']');
 		}
 		return sb.toString();
 	}

spring-aop/src/test/java/org/springframework/aop/aspectj/AspectJAdviceParameterNameDiscovererTests.java

@@ -276,14 +276,14 @@ public class AspectJAdviceParameterNameDiscovererTests {
 
 	private static String format(String[] names) {
 		StringBuilder sb = new StringBuilder();
-		sb.append("(");
+		sb.append('(');
 		for (int i = 0; i < names.length; i++) {
 			sb.append(names[i]);
 			if ((i + 1) < names.length) {
-				sb.append(",");
+				sb.append(',');
 			}
 		}
-		sb.append(")");
+		sb.append(')');
 		return sb.toString();
 	}
 

spring-aop/src/test/java/org/springframework/aop/framework/ProxyFactoryTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -183,7 +183,7 @@ public class ProxyFactoryTests {
 	}
 
 	@Test
-	public void testGetsAllInterfaces() throws Exception {
+	public void testGetsAllInterfaces() {
 		// Extend to get new interface
 		class TestBeanSubclass extends TestBean implements Comparable<Object> {
 			@Override
@@ -240,6 +240,16 @@ public class ProxyFactoryTests {
 		assertThat(factory.countAdvicesOfType(NopInterceptor.class) == 2).isTrue();
 	}
 
+	@Test
+	public void testSealedInterfaceExclusion() {
+		// String implements ConstantDesc on JDK 12+, sealed as of JDK 17
+		ProxyFactory factory = new ProxyFactory(new String());
+		NopInterceptor di = new NopInterceptor();
+		factory.addAdvice(0, di);
+		Object proxy = factory.getProxy();
+		assertThat(proxy).isInstanceOf(CharSequence.class);
+	}
+
 	/**
 	 * Should see effect immediately on behavior.
 	 */

spring-beans/src/main/java/org/springframework/beans/BeanUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -41,8 +41,6 @@ import kotlin.reflect.KParameter;
 import kotlin.reflect.full.KClasses;
 import kotlin.reflect.jvm.KCallablesJvm;
 import kotlin.reflect.jvm.ReflectJvmMapping;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 
 import org.springframework.core.DefaultParameterNameDiscoverer;
 import org.springframework.core.KotlinDetector;
@@ -75,8 +73,6 @@ import org.springframework.util.StringUtils;
  */
 public abstract class BeanUtils {
 
-	private static final Log logger = LogFactory.getLog(BeanUtils.class);
-
 	private static final ParameterNameDiscoverer parameterNameDiscoverer =
 			new DefaultParameterNameDiscoverer();
 
@@ -551,9 +547,6 @@ public abstract class BeanUtils {
 			}
 			catch (Throwable ex) {
 				// e.g. AccessControlException on Google App Engine
-				if (logger.isDebugEnabled()) {
-					logger.debug("Could not access system ClassLoader: " + ex);
-				}
 				return null;
 			}
 		}
@@ -564,10 +557,6 @@ public abstract class BeanUtils {
 			Class<?> editorClass = cl.loadClass(editorName);
 			if (editorClass != null) {
 				if (!PropertyEditor.class.isAssignableFrom(editorClass)) {
-					if (logger.isInfoEnabled()) {
-						logger.info("Editor class [" + editorName +
-								"] does not implement [java.beans.PropertyEditor] interface");
-					}
 					unknownEditorTypes.add(targetType);
 					return null;
 				}
@@ -579,10 +568,6 @@ public abstract class BeanUtils {
 		catch (ClassNotFoundException ex) {
 			// Ignore - fall back to unknown editor type registration below
 		}
-		if (logger.isTraceEnabled()) {
-			logger.trace("No property editor [" + editorName + "] found for type " +
-					targetTypeName + " according to 'Editor' suffix convention");
-		}
 		unknownEditorTypes.add(targetType);
 		return null;
 	}

spring-beans/src/main/java/org/springframework/beans/TypeConverterDelegate.java

@@ -247,14 +247,14 @@ class TypeConverterDelegate {
 				// Definitely doesn't match: throw IllegalArgumentException/IllegalStateException
 				StringBuilder msg = new StringBuilder();
 				msg.append("Cannot convert value of type '").append(ClassUtils.getDescriptiveType(newValue));
-				msg.append("' to required type '").append(ClassUtils.getQualifiedName(requiredType)).append("'");
+				msg.append("' to required type '").append(ClassUtils.getQualifiedName(requiredType)).append('\'');
 				if (propertyName != null) {
-					msg.append(" for property '").append(propertyName).append("'");
+					msg.append(" for property '").append(propertyName).append('\'');
 				}
 				if (editor != null) {
 					msg.append(": PropertyEditor [").append(editor.getClass().getName()).append(
 							"] returned inappropriate value of type '").append(
-							ClassUtils.getDescriptiveType(convertedValue)).append("'");
+							ClassUtils.getDescriptiveType(convertedValue)).append('\'');
 					throw new IllegalArgumentException(msg.toString());
 				}
 				else {

spring-beans/src/main/java/org/springframework/beans/factory/BeanFactory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -84,7 +84,7 @@ import org.springframework.lang.Nullable;
  * (only applicable when running in a web application context)
  * <li>{@code postProcessBeforeInitialization} methods of BeanPostProcessors
  * <li>InitializingBean's {@code afterPropertiesSet}
- * <li>a custom init-method definition
+ * <li>a custom {@code init-method} definition
  * <li>{@code postProcessAfterInitialization} methods of BeanPostProcessors
  * </ol>
  *
@@ -92,7 +92,7 @@ import org.springframework.lang.Nullable;
  * <ol>
  * <li>{@code postProcessBeforeDestruction} methods of DestructionAwareBeanPostProcessors
  * <li>DisposableBean's {@code destroy}
- * <li>a custom destroy-method definition
+ * <li>a custom {@code destroy-method} definition
  * </ol>
  *
  * @author Rod Johnson
@@ -102,6 +102,8 @@ import org.springframework.lang.Nullable;
  * @see BeanNameAware#setBeanName
  * @see BeanClassLoaderAware#setBeanClassLoader
  * @see BeanFactoryAware#setBeanFactory
+ * @see org.springframework.context.EnvironmentAware#setEnvironment
+ * @see org.springframework.context.EmbeddedValueResolverAware#setEmbeddedValueResolver
  * @see org.springframework.context.ResourceLoaderAware#setResourceLoader
  * @see org.springframework.context.ApplicationEventPublisherAware#setApplicationEventPublisher
  * @see org.springframework.context.MessageSourceAware#setMessageSource
@@ -111,6 +113,7 @@ import org.springframework.lang.Nullable;
  * @see InitializingBean#afterPropertiesSet
  * @see org.springframework.beans.factory.support.RootBeanDefinition#getInitMethodName
  * @see org.springframework.beans.factory.config.BeanPostProcessor#postProcessAfterInitialization
+ * @see org.springframework.beans.factory.config.DestructionAwareBeanPostProcessor#postProcessBeforeDestruction
  * @see DisposableBean#destroy
  * @see org.springframework.beans.factory.support.RootBeanDefinition#getDestroyMethodName
  */

spring-beans/src/main/java/org/springframework/beans/factory/annotation/RequiredAnnotationBeanPostProcessor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -217,13 +217,13 @@ public class RequiredAnnotationBeanPostProcessor implements SmartInstantiationAw
 					sb.append(" and");
 				}
 				else {
-					sb.append(",");
+					sb.append(',');
 				}
 			}
-			sb.append(" '").append(propertyName).append("'");
+			sb.append(" '").append(propertyName).append('\'');
 		}
 		sb.append(size == 1 ? " is" : " are");
-		sb.append(" required for bean '").append(beanName).append("'");
+		sb.append(" required for bean '").append(beanName).append('\'');
 		return sb.toString();
 	}
 

spring-beans/src/main/java/org/springframework/beans/factory/groovy/GroovyBeanDefinitionReader.java

@@ -489,9 +489,9 @@ public class GroovyBeanDefinitionReader extends AbstractBeanDefinitionReader imp
 						resolveConstructorArguments(args, 2, hasClosureArgument ? args.length - 1 : args.length);
 				this.currentBeanDefinition = new GroovyBeanDefinitionWrapper(beanName, (Class<?>) args[1], constructorArgs);
 				Map<?, ?> namedArgs = (Map<?, ?>) args[0];
-				for (Object key : namedArgs.keySet()) {
-					String propName = (String) key;
-					setProperty(propName, namedArgs.get(propName));
+				for (Map.Entry<?, ?> entity : namedArgs.entrySet()) {
+					String propName = (String) entity.getKey();
+					setProperty(propName, entity.getValue());
 				}
 			}
 			// factory method syntax

spring-beans/src/main/java/org/springframework/beans/factory/support/AbstractBeanDefinition.java

@@ -1241,7 +1241,7 @@ public abstract class AbstractBeanDefinition extends BeanMetadataAttributeAccess
 	@Override
 	public String toString() {
 		StringBuilder sb = new StringBuilder("class [");
-		sb.append(getBeanClassName()).append("]");
+		sb.append(getBeanClassName()).append(']');
 		sb.append("; scope=").append(this.scope);
 		sb.append("; abstract=").append(this.abstractFlag);
 		sb.append("; lazyInit=").append(this.lazyInit);

spring-beans/src/main/java/org/springframework/beans/factory/support/BeanDefinitionBuilder.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,6 +21,7 @@ import java.util.function.Supplier;
 import org.springframework.beans.factory.config.AutowiredPropertyMarker;
 import org.springframework.beans.factory.config.BeanDefinitionCustomizer;
 import org.springframework.beans.factory.config.RuntimeBeanReference;
+import org.springframework.core.ResolvableType;
 import org.springframework.lang.Nullable;
 import org.springframework.util.ObjectUtils;
 
@@ -102,7 +103,7 @@ public final class BeanDefinitionBuilder {
 	 * @param beanClass the {@code Class} of the bean that the definition is being created for
 	 */
 	public static BeanDefinitionBuilder rootBeanDefinition(Class<?> beanClass) {
-		return rootBeanDefinition(beanClass, null);
+		return rootBeanDefinition(beanClass, (String) null);
 	}
 
 	/**
@@ -117,6 +118,30 @@ public final class BeanDefinitionBuilder {
 		return builder;
 	}
 
+	/**
+	 * Create a new {@code BeanDefinitionBuilder} used to construct a {@link RootBeanDefinition}.
+	 * @param beanType the {@link ResolvableType type} of the bean that the definition is being created for
+	 * @param instanceSupplier a callback for creating an instance of the bean
+	 * @since 5.3.9
+	 */
+	public static <T> BeanDefinitionBuilder rootBeanDefinition(ResolvableType beanType, Supplier<T> instanceSupplier) {
+		RootBeanDefinition beanDefinition = new RootBeanDefinition();
+		beanDefinition.setTargetType(beanType);
+		beanDefinition.setInstanceSupplier(instanceSupplier);
+		return new BeanDefinitionBuilder(beanDefinition);
+	}
+
+	/**
+	 * Create a new {@code BeanDefinitionBuilder} used to construct a {@link RootBeanDefinition}.
+	 * @param beanClass the {@code Class} of the bean that the definition is being created for
+	 * @param instanceSupplier a callback for creating an instance of the bean
+	 * @since 5.3.9
+	 * @see #rootBeanDefinition(ResolvableType, Supplier)
+	 */
+	public static <T> BeanDefinitionBuilder rootBeanDefinition(Class<T> beanClass, Supplier<T> instanceSupplier) {
+		return rootBeanDefinition(ResolvableType.forClass(beanClass), instanceSupplier);
+	}
+
 	/**
 	 * Create a new {@code BeanDefinitionBuilder} used to construct a {@link ChildBeanDefinition}.
 	 * @param parentName the name of the parent bean
@@ -331,6 +356,16 @@ public final class BeanDefinitionBuilder {
 		return this;
 	}
 
+	/**
+	 * Set whether this bean is 'synthetic', that is, not defined by
+	 * the application itself.
+	 * @since 5.3.9
+	 */
+	public BeanDefinitionBuilder setSynthetic(boolean synthetic) {
+		this.beanDefinition.setSynthetic(synthetic);
+		return this;
+	}
+
 	/**
 	 * Apply the given customizers to the underlying bean definition.
 	 * @since 5.0

spring-beans/src/main/java/org/springframework/beans/factory/support/CglibSubclassingInstantiationStrategy.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -35,6 +35,7 @@ import org.springframework.cglib.proxy.Factory;
 import org.springframework.cglib.proxy.MethodInterceptor;
 import org.springframework.cglib.proxy.MethodProxy;
 import org.springframework.cglib.proxy.NoOp;
+import org.springframework.core.ResolvableType;
 import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
@@ -244,8 +245,10 @@ public class CglibSubclassingInstantiationStrategy extends SimpleInstantiationSt
 				return (bean.equals(null) ? null : bean);
 			}
 			else {
-				return (argsToUse != null ? this.owner.getBean(method.getReturnType(), argsToUse) :
-						this.owner.getBean(method.getReturnType()));
+				// Find target bean matching the (potentially generic) method return type
+				ResolvableType genericReturnType = ResolvableType.forMethodReturnType(method);
+				return (argsToUse != null ? this.owner.getBeanProvider(genericReturnType).getObject(argsToUse) :
+						this.owner.getBeanProvider(genericReturnType).getObject());
 			}
 		}
 	}

spring-beans/src/main/java/org/springframework/beans/factory/support/ConstructorResolver.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -277,12 +277,12 @@ class ConstructorResolver {
 					throw ex;
 				}
 				throw new BeanCreationException(mbd.getResourceDescription(), beanName,
-						"Could not resolve matching constructor " +
+						"Could not resolve matching constructor on bean class [" + mbd.getBeanClassName() + "] " +
 						"(hint: specify index/type/name arguments for simple parameters to avoid type ambiguities)");
 			}
 			else if (ambiguousConstructors != null && !mbd.isLenientConstructorResolution()) {
 				throw new BeanCreationException(mbd.getResourceDescription(), beanName,
-						"Ambiguous constructor matches found in bean '" + beanName + "' " +
+						"Ambiguous constructor matches found on bean class [" + mbd.getBeanClassName() + "] " +
 						"(hint: specify index/type/name arguments for simple parameters to avoid type ambiguities): " +
 						ambiguousConstructors);
 			}
@@ -608,7 +608,7 @@ class ConstructorResolver {
 				}
 				String argDesc = StringUtils.collectionToCommaDelimitedString(argTypes);
 				throw new BeanCreationException(mbd.getResourceDescription(), beanName,
-						"No matching factory method found: " +
+						"No matching factory method found on class [" + factoryClass.getName() + "]: " +
 						(mbd.getFactoryBeanName() != null ?
 							"factory bean '" + mbd.getFactoryBeanName() + "'; " : "") +
 						"factory method '" + mbd.getFactoryMethodName() + "(" + argDesc + ")'. " +
@@ -619,12 +619,12 @@ class ConstructorResolver {
 			}
 			else if (void.class == factoryMethodToUse.getReturnType()) {
 				throw new BeanCreationException(mbd.getResourceDescription(), beanName,
-						"Invalid factory method '" + mbd.getFactoryMethodName() +
-						"': needs to have a non-void return type!");
+						"Invalid factory method '" + mbd.getFactoryMethodName() + "' on class [" +
+						factoryClass.getName() + "]: needs to have a non-void return type!");
 			}
 			else if (ambiguousFactoryMethods != null) {
 				throw new BeanCreationException(mbd.getResourceDescription(), beanName,
-						"Ambiguous factory method matches found in bean '" + beanName + "' " +
+						"Ambiguous factory method matches found on class [" + factoryClass.getName() + "] " +
 						"(hint: specify index/type/name arguments for simple parameters to avoid type ambiguities): " +
 						ambiguousFactoryMethods);
 			}

spring-beans/src/main/java/org/springframework/beans/factory/support/LookupOverride.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,17 +19,25 @@ package org.springframework.beans.factory.support;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
 
+import org.springframework.core.ResolvableType;
 import org.springframework.lang.Nullable;
 import org.springframework.util.ObjectUtils;
 
 /**
- * Represents an override of a method that looks up an object in the same IoC context.
+ * Represents an override of a method that looks up an object in the same IoC context,
+ * either by bean name or by bean type (based on the declared method return type).
  *
- * <p>Methods eligible for lookup override must not have arguments.
+ * <p>Methods eligible for lookup override may declare arguments in which case the
+ * given arguments are passed to the bean retrieval operation.
  *
  * @author Rod Johnson
  * @author Juergen Hoeller
  * @since 1.1
+ * @see org.springframework.beans.factory.BeanFactory#getBean(String)
+ * @see org.springframework.beans.factory.BeanFactory#getBean(Class)
+ * @see org.springframework.beans.factory.BeanFactory#getBean(String, Object...)
+ * @see org.springframework.beans.factory.BeanFactory#getBean(Class, Object...)
+ * @see org.springframework.beans.factory.BeanFactory#getBeanProvider(ResolvableType)
  */
 public class LookupOverride extends MethodOverride {
 
@@ -43,8 +51,8 @@ public class LookupOverride extends MethodOverride {
 	/**
 	 * Construct a new LookupOverride.
 	 * @param methodName the name of the method to override
-	 * @param beanName the name of the bean in the current {@code BeanFactory}
-	 * that the overridden method should return (may be {@code null})
+	 * @param beanName the name of the bean in the current {@code BeanFactory} that the
+	 * overridden method should return (may be {@code null} for type-based bean retrieval)
 	 */
 	public LookupOverride(String methodName, @Nullable String beanName) {
 		super(methodName);
@@ -53,9 +61,9 @@ public class LookupOverride extends MethodOverride {
 
 	/**
 	 * Construct a new LookupOverride.
-	 * @param method the method to override
-	 * @param beanName the name of the bean in the current {@code BeanFactory}
-	 * that the overridden method should return (may be {@code null})
+	 * @param method the method declaration to override
+	 * @param beanName the name of the bean in the current {@code BeanFactory} that the
+	 * overridden method should return (may be {@code null} for type-based bean retrieval)
 	 */
 	public LookupOverride(Method method, @Nullable String beanName) {
 		super(method.getName());

spring-beans/src/main/java/org/springframework/beans/factory/support/MethodReplacer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,9 +19,8 @@ package org.springframework.beans.factory.support;
 import java.lang.reflect.Method;
 
 /**
- * Interface to be implemented by classes that can reimplement any method
- * on an IoC-managed object: the <b>Method Injection</b> form of
- * Dependency Injection.
+ * Interface to be implemented by classes that can reimplement any method on an
+ * IoC-managed object: the <b>Method Injection</b> form of Dependency Injection.
  *
  * <p>Such methods may be (but need not be) abstract, in which case the
  * container will create a concrete subclass to instantiate.

spring-beans/src/main/java/org/springframework/beans/factory/support/ReplaceOverride.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -25,7 +25,7 @@ import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;
 
 /**
- * Extension of MethodOverride that represents an arbitrary
+ * Extension of {@link MethodOverride} that represents an arbitrary
  * override of a method by the IoC container.
  *
  * <p>Any non-final method can be overridden, irrespective of its
@@ -45,7 +45,7 @@ public class ReplaceOverride extends MethodOverride {
 	/**
 	 * Construct a new ReplaceOverride.
 	 * @param methodName the name of the method to override
-	 * @param methodReplacerBeanName the bean name of the MethodReplacer
+	 * @param methodReplacerBeanName the bean name of the {@link MethodReplacer}
 	 */
 	public ReplaceOverride(String methodName, String methodReplacerBeanName) {
 		super(methodName);

spring-beans/src/main/java/org/springframework/beans/propertyeditors/LocaleEditor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -23,9 +23,9 @@ import org.springframework.util.StringUtils;
 /**
  * Editor for {@code java.util.Locale}, to directly populate a Locale property.
  *
- * <p>Expects the same syntax as Locale's {@code toString}, i.e. language +
+ * <p>Expects the same syntax as Locale's {@code toString()}, i.e. language +
  * optionally country + optionally variant, separated by "_" (e.g. "en", "en_US").
- * Also accepts spaces as separators, as alternative to underscores.
+ * Also accepts spaces as separators, as an alternative to underscores.
  *
  * @author Juergen Hoeller
  * @since 26.05.2003

spring-beans/src/main/java/org/springframework/beans/propertyeditors/PathEditor.java

@@ -26,8 +26,8 @@ import java.nio.file.Paths;
 
 import org.springframework.core.io.Resource;
 import org.springframework.core.io.ResourceEditor;
-import org.springframework.core.io.ResourceLoader;
 import org.springframework.util.Assert;
+import org.springframework.util.ResourceUtils;
 
 /**
  * Editor for {@code java.nio.file.Path}, to directly populate a Path
@@ -74,7 +74,7 @@ public class PathEditor extends PropertyEditorSupport {
 
 	@Override
 	public void setAsText(String text) throws IllegalArgumentException {
-		boolean nioPathCandidate = !text.startsWith(ResourceLoader.CLASSPATH_URL_PREFIX);
+		boolean nioPathCandidate = !text.startsWith(ResourceUtils.CLASSPATH_URL_PREFIX);
 		if (nioPathCandidate && !text.startsWith("/")) {
 			try {
 				URI uri = new URI(text);
@@ -85,9 +85,13 @@ public class PathEditor extends PropertyEditorSupport {
 					return;
 				}
 			}
-			catch (URISyntaxException | FileSystemNotFoundException ex) {
-				// Not a valid URI (let's try as Spring resource location),
-				// or a URI scheme not registered for NIO (let's try URL
+			catch (URISyntaxException ex) {
+				// Not a valid URI; potentially a Windows-style path after
+				// a file prefix (let's try as Spring resource location)
+				nioPathCandidate = !text.startsWith(ResourceUtils.FILE_URL_PREFIX);
+			}
+			catch (FileSystemNotFoundException ex) {
+				// URI scheme not registered for NIO (let's try URL
 				// protocol handlers via Spring's resource mechanism).
 			}
 		}
@@ -97,8 +101,7 @@ public class PathEditor extends PropertyEditorSupport {
 		if (resource == null) {
 			setValue(null);
 		}
-		else if (!resource.isFile() && !resource.exists() && nioPathCandidate) {
-			// Prefer getFile().toPath() below for non-existent file handles
+		else if (nioPathCandidate && !resource.exists()) {
 			setValue(Paths.get(text).normalize());
 		}
 		else {

spring-beans/src/main/java/org/springframework/beans/support/PropertyComparator.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -44,8 +44,6 @@ public class PropertyComparator<T> implements Comparator<T> {
 
 	private final SortDefinition sortDefinition;
 
-	private final BeanWrapperImpl beanWrapper = new BeanWrapperImpl(false);
-
 
 	/**
 	 * Create a new PropertyComparator for the given SortDefinition.
@@ -115,8 +113,9 @@ public class PropertyComparator<T> implements Comparator<T> {
 		// (similar to JSTL EL). If the property doesn't exist in the
 		// first place, let the exception through.
 		try {
-			this.beanWrapper.setWrappedInstance(obj);
-			return this.beanWrapper.getPropertyValue(this.sortDefinition.getProperty());
+			BeanWrapperImpl beanWrapper = new BeanWrapperImpl(false);
+			beanWrapper.setWrappedInstance(obj);
+			return beanWrapper.getPropertyValue(this.sortDefinition.getProperty());
 		}
 		catch (BeansException ex) {
 			logger.debug("PropertyComparator could not access property - treating as null for sorting", ex);

spring-beans/src/test/java/org/springframework/beans/ConcurrentBeanWrapperTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,14 +18,14 @@ package org.springframework.beans;
 
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
-import java.util.Collections;
-import java.util.HashSet;
 import java.util.Iterator;
 import java.util.Properties;
 import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
+import org.junit.jupiter.api.RepeatedTest;
 import org.junit.jupiter.api.Test;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -36,23 +36,21 @@ import static org.assertj.core.api.Assertions.assertThat;
  * @author Chris Beams
  * @since 08.03.2004
  */
-public class ConcurrentBeanWrapperTests {
+class ConcurrentBeanWrapperTests {
 
 	private final Log logger = LogFactory.getLog(getClass());
 
-	private Set<TestRun> set = Collections.synchronizedSet(new HashSet<TestRun>());
+	private final Set<TestRun> set = ConcurrentHashMap.newKeySet();
 
 	private Throwable ex = null;
 
-	@Test
-	public void testSingleThread() {
-		for (int i = 0; i < 100; i++) {
-			performSet();
-		}
+	@RepeatedTest(100)
+	void testSingleThread() {
+		performSet();
 	}
 
 	@Test
-	public void testConcurrent() {
+	void testConcurrent() {
 		for (int i = 0; i < 10; i++) {
 			TestRun run = new TestRun(this);
 			set.add(run);
@@ -82,7 +80,7 @@ public class ConcurrentBeanWrapperTests {
 
 		Properties p = (Properties) System.getProperties().clone();
 
-		assertThat(p.size() != 0).as("The System properties must not be empty").isTrue();
+		assertThat(p).as("The System properties must not be empty").isNotEmpty();
 
 		for (Iterator<?> i = p.entrySet().iterator(); i.hasNext();) {
 			i.next();
@@ -111,7 +109,7 @@ public class ConcurrentBeanWrapperTests {
 
 		private ConcurrentBeanWrapperTests test;
 
-		public TestRun(ConcurrentBeanWrapperTests test) {
+		TestRun(ConcurrentBeanWrapperTests test) {
 			this.test = test;
 		}
 

spring-beans/src/test/java/org/springframework/beans/factory/Spr5475Tests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -31,6 +31,7 @@ import static org.springframework.beans.factory.support.BeanDefinitionBuilder.ro
  * invoking a factory method is not instructive to the user and rather misleading.
  *
  * @author Chris Beams
+ * @author Juergen Hoeller
  */
 public class Spr5475Tests {
 
@@ -40,7 +41,8 @@ public class Spr5475Tests {
 				rootBeanDefinition(Foo.class)
 					.setFactoryMethod("noArgFactory")
 					.addConstructorArgValue("bogusArg").getBeanDefinition(),
-				"Error creating bean with name 'foo': No matching factory method found: factory method 'noArgFactory(String)'. " +
+				"Error creating bean with name 'foo': No matching factory method found on class " +
+				"[org.springframework.beans.factory.Spr5475Tests$Foo]: factory method 'noArgFactory(String)'. " +
 				"Check that a method with the specified name and arguments exists and that it is static.");
 	}
 
@@ -51,7 +53,8 @@ public class Spr5475Tests {
 					.setFactoryMethod("noArgFactory")
 					.addConstructorArgValue("bogusArg1")
 					.addConstructorArgValue("bogusArg2".getBytes()).getBeanDefinition(),
-				"Error creating bean with name 'foo': No matching factory method found: factory method 'noArgFactory(String,byte[])'. " +
+				"Error creating bean with name 'foo': No matching factory method found on class " +
+				"[org.springframework.beans.factory.Spr5475Tests$Foo]: factory method 'noArgFactory(String,byte[])'. " +
 				"Check that a method with the specified name and arguments exists and that it is static.");
 	}
 
@@ -65,7 +68,8 @@ public class Spr5475Tests {
 		def.setConstructorArgumentValues(cav);
 
 		assertExceptionMessageForMisconfiguredFactoryMethod(def,
-				"Error creating bean with name 'foo': No matching factory method found: factory method 'noArgFactory(CharSequence,byte[])'. " +
+				"Error creating bean with name 'foo': No matching factory method found on class " +
+				"[org.springframework.beans.factory.Spr5475Tests$Foo]: factory method 'noArgFactory(CharSequence,byte[])'. " +
 				"Check that a method with the specified name and arguments exists and that it is static.");
 	}
 

spring-beans/src/test/java/org/springframework/beans/factory/annotation/LookupAnnotationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -121,6 +121,18 @@ public class LookupAnnotationTests {
 		assertThat(beanFactory.getBean(BeanConsumer.class).abstractBean).isSameAs(bean);
 	}
 
+	@Test
+	public void testWithGenericBean() {
+		beanFactory.registerBeanDefinition("numberBean", new RootBeanDefinition(NumberBean.class));
+		beanFactory.registerBeanDefinition("doubleStore", new RootBeanDefinition(DoubleStore.class));
+		beanFactory.registerBeanDefinition("floatStore", new RootBeanDefinition(FloatStore.class));
+
+		NumberBean bean = (NumberBean) beanFactory.getBean("numberBean");
+		assertThat(bean).isNotNull();
+		assertThat(beanFactory.getBean(DoubleStore.class)).isSameAs(bean.getDoubleStore());
+		assertThat(beanFactory.getBean(FloatStore.class)).isSameAs(bean.getFloatStore());
+	}
+
 
 	public static abstract class AbstractBean {
 
@@ -147,4 +159,26 @@ public class LookupAnnotationTests {
 		AbstractBean abstractBean;
 	}
 
+
+	public static class NumberStore<T extends Number> {
+	}
+
+
+	public static class DoubleStore extends NumberStore<Double> {
+	}
+
+
+	public static class FloatStore extends NumberStore<Float> {
+	}
+
+
+	public static abstract class NumberBean {
+
+		@Lookup
+		public abstract NumberStore<Double> getDoubleStore();
+
+		@Lookup
+		public abstract NumberStore<Float> getFloatStore();
+	}
+
 }

spring-beans/src/test/java/org/springframework/beans/factory/config/YamlProcessorTests.java

@@ -141,6 +141,7 @@ class YamlProcessorTests {
 	}
 
 	@Test
+	@SuppressWarnings("unchecked")
 	void standardTypesSupportedByDefault() throws Exception {
 		setYaml("value: !!set\n  ? first\n  ? second");
 		this.processor.process((properties, map) -> {

spring-beans/src/test/java/org/springframework/beans/factory/support/BeanDefinitionBuilderTests.java

@@ -17,22 +17,25 @@
 package org.springframework.beans.factory.support;
 
 import java.util.Arrays;
+import java.util.function.Function;
 
 import org.junit.jupiter.api.Test;
 
 import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.beans.testfixture.beans.TestBean;
+import org.springframework.core.ResolvableType;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
 /**
  * @author Rod Johnson
  * @author Juergen Hoeller
+ * @author Stephane Nicoll
  */
-public class BeanDefinitionBuilderTests {
+class BeanDefinitionBuilderTests {
 
 	@Test
-	public void beanClassWithSimpleProperty() {
+	void builderWithBeanClassWithSimpleProperty() {
 		String[] dependsOn = new String[] { "A", "B", "C" };
 		BeanDefinitionBuilder bdb = BeanDefinitionBuilder.rootBeanDefinition(TestBean.class);
 		bdb.setScope(BeanDefinition.SCOPE_PROTOTYPE);
@@ -49,7 +52,7 @@ public class BeanDefinitionBuilderTests {
 	}
 
 	@Test
-	public void beanClassWithFactoryMethod() {
+	void builderWithBeanClassAndFactoryMethod() {
 		BeanDefinitionBuilder bdb = BeanDefinitionBuilder.rootBeanDefinition(TestBean.class, "create");
 		RootBeanDefinition rbd = (RootBeanDefinition) bdb.getBeanDefinition();
 		assertThat(rbd.hasBeanClass()).isTrue();
@@ -58,7 +61,7 @@ public class BeanDefinitionBuilderTests {
 	}
 
 	@Test
-	public void beanClassName() {
+	void builderWithBeanClassName() {
 		BeanDefinitionBuilder bdb = BeanDefinitionBuilder.rootBeanDefinition(TestBean.class.getName());
 		RootBeanDefinition rbd = (RootBeanDefinition) bdb.getBeanDefinition();
 		assertThat(rbd.hasBeanClass()).isFalse();
@@ -66,7 +69,7 @@ public class BeanDefinitionBuilderTests {
 	}
 
 	@Test
-	public void beanClassNameWithFactoryMethod() {
+	void builderWithBeanClassNameAndFactoryMethod() {
 		BeanDefinitionBuilder bdb = BeanDefinitionBuilder.rootBeanDefinition(TestBean.class.getName(), "create");
 		RootBeanDefinition rbd = (RootBeanDefinition) bdb.getBeanDefinition();
 		assertThat(rbd.hasBeanClass()).isFalse();
@@ -74,4 +77,78 @@ public class BeanDefinitionBuilderTests {
 		assertThat(rbd.getFactoryMethodName()).isEqualTo("create");
 	}
 
+	@Test
+	void builderWithResolvableTypeAndInstanceSupplier() {
+		ResolvableType type = ResolvableType.forClassWithGenerics(Function.class, Integer.class, String.class);
+		Function<Integer, String> function = i -> "value " + i;
+		RootBeanDefinition rbd = (RootBeanDefinition) BeanDefinitionBuilder
+				.rootBeanDefinition(type, () -> function).getBeanDefinition();
+		assertThat(rbd.getResolvableType()).isEqualTo(type);
+		assertThat(rbd.getInstanceSupplier()).isNotNull();
+		assertThat(rbd.getInstanceSupplier().get()).isInstanceOf(Function.class);
+	}
+
+	@Test
+	void builderWithBeanClassAndInstanceSupplier() {
+		RootBeanDefinition rbd = (RootBeanDefinition) BeanDefinitionBuilder
+				.rootBeanDefinition(String.class, () -> "test").getBeanDefinition();
+		assertThat(rbd.getResolvableType().resolve()).isEqualTo(String.class);
+		assertThat(rbd.getInstanceSupplier()).isNotNull();
+		assertThat(rbd.getInstanceSupplier().get()).isEqualTo("test");
+	}
+
+	@Test
+	void builderWithAutowireMode() {
+		assertThat(BeanDefinitionBuilder.rootBeanDefinition(TestBean.class)
+				.setAutowireMode(RootBeanDefinition.AUTOWIRE_BY_TYPE).getBeanDefinition().getAutowireMode())
+				.isEqualTo(RootBeanDefinition.AUTOWIRE_BY_TYPE);
+	}
+
+	@Test
+	void builderWithDependencyCheck() {
+		assertThat(BeanDefinitionBuilder.rootBeanDefinition(TestBean.class)
+				.setDependencyCheck(RootBeanDefinition.DEPENDENCY_CHECK_ALL)
+				.getBeanDefinition().getDependencyCheck())
+				.isEqualTo(RootBeanDefinition.DEPENDENCY_CHECK_ALL);
+	}
+
+	@Test
+	void builderWithDependsOn() {
+		assertThat(BeanDefinitionBuilder.rootBeanDefinition(TestBean.class).addDependsOn("test")
+				.addDependsOn("test2").getBeanDefinition().getDependsOn())
+				.containsExactly("test", "test2");
+	}
+
+	@Test
+	void builderWithPrimary() {
+		assertThat(BeanDefinitionBuilder.rootBeanDefinition(TestBean.class)
+				.setPrimary(true).getBeanDefinition().isPrimary()).isTrue();
+	}
+
+	@Test
+	void builderWithRole() {
+		assertThat(BeanDefinitionBuilder.rootBeanDefinition(TestBean.class)
+				.setRole(BeanDefinition.ROLE_INFRASTRUCTURE).getBeanDefinition().getRole())
+				.isEqualTo(BeanDefinition.ROLE_INFRASTRUCTURE);
+	}
+
+	@Test
+	void builderWithSynthetic() {
+		assertThat(BeanDefinitionBuilder.rootBeanDefinition(TestBean.class)
+				.setSynthetic(true).getBeanDefinition().isSynthetic()).isTrue();
+	}
+
+	@Test
+	void builderWithCustomizers() {
+		BeanDefinition beanDefinition = BeanDefinitionBuilder.rootBeanDefinition(TestBean.class)
+				.applyCustomizers(builder -> {
+					builder.setFactoryMethodName("create");
+					builder.setRole(BeanDefinition.ROLE_SUPPORT);
+				})
+				.applyCustomizers(builder -> builder.setRole(BeanDefinition.ROLE_INFRASTRUCTURE))
+				.getBeanDefinition();
+		assertThat(beanDefinition.getFactoryMethodName()).isEqualTo("create");
+		assertThat(beanDefinition.getRole()).isEqualTo(BeanDefinition.ROLE_INFRASTRUCTURE);
+	}
+
 }

spring-beans/src/test/java/org/springframework/beans/factory/support/LookupMethodTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -36,7 +36,7 @@ public class LookupMethodTests {
 
 
 	@BeforeEach
-	public void setUp() {
+	public void setup() {
 		beanFactory = new DefaultListableBeanFactory();
 		XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(beanFactory);
 		reader.loadBeanDefinitions(new ClassPathResource("lookupMethodTests.xml", getClass()));
@@ -83,8 +83,8 @@ public class LookupMethodTests {
 	public void testWithThreeArgsShouldFail() {
 		AbstractBean bean = (AbstractBean) beanFactory.getBean("abstractBean");
 		assertThat(bean).isNotNull();
-		assertThatExceptionOfType(AbstractMethodError.class).as("does not have a three arg constructor").isThrownBy(() ->
-			bean.getThreeArguments("name", 1, 2));
+		assertThatExceptionOfType(AbstractMethodError.class).as("does not have a three arg constructor")
+				.isThrownBy(() -> bean.getThreeArguments("name", 1, 2));
 	}
 
 	@Test
@@ -97,6 +97,21 @@ public class LookupMethodTests {
 		assertThat(expected.isJedi()).isTrue();
 	}
 
+	@Test
+	public void testWithGenericBean() {
+		RootBeanDefinition bd = new RootBeanDefinition(NumberBean.class);
+		bd.getMethodOverrides().addOverride(new LookupOverride("getDoubleStore", null));
+		bd.getMethodOverrides().addOverride(new LookupOverride("getFloatStore", null));
+		beanFactory.registerBeanDefinition("numberBean", bd);
+		beanFactory.registerBeanDefinition("doubleStore", new RootBeanDefinition(DoubleStore.class));
+		beanFactory.registerBeanDefinition("floatStore", new RootBeanDefinition(FloatStore.class));
+
+		NumberBean bean = (NumberBean) beanFactory.getBean("numberBean");
+		assertThat(bean).isNotNull();
+		assertThat(beanFactory.getBean(DoubleStore.class)).isSameAs(bean.getDoubleStore());
+		assertThat(beanFactory.getBean(FloatStore.class)).isSameAs(bean.getFloatStore());
+	}
+
 
 	public static abstract class AbstractBean {
 
@@ -111,4 +126,24 @@ public class LookupMethodTests {
 		public abstract TestBean getThreeArguments(String name, int age, int anotherArg);
 	}
 
+
+	public static class NumberStore<T extends Number> {
+	}
+
+
+	public static class DoubleStore extends NumberStore<Double> {
+	}
+
+
+	public static class FloatStore extends NumberStore<Float> {
+	}
+
+
+	public static abstract class NumberBean {
+
+		public abstract NumberStore<Double> getDoubleStore();
+
+		public abstract NumberStore<Float> getFloatStore();
+	}
+
 }

spring-beans/src/test/java/org/springframework/beans/factory/support/QualifierAnnotationAutowireBeanFactoryTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -244,7 +244,7 @@ public class QualifierAnnotationAutowireBeanFactoryTests {
 	@Target({ElementType.FIELD, ElementType.PARAMETER})
 	@Retention(RetentionPolicy.RUNTIME)
 	@Qualifier
-	private static @interface TestQualifier {
+	private @interface TestQualifier {
 	}
 
 }

spring-beans/src/test/java/org/springframework/beans/propertyeditors/PathEditorTests.java

@@ -39,8 +39,7 @@ public class PathEditorTests {
 		pathEditor.setAsText("classpath:" + ClassUtils.classPackageAsResourcePath(getClass()) + "/" +
 				ClassUtils.getShortName(getClass()) + ".class");
 		Object value = pathEditor.getValue();
-		boolean condition = value instanceof Path;
-		assertThat(condition).isTrue();
+		assertThat(value instanceof Path).isTrue();
 		Path path = (Path) value;
 		assertThat(path.toFile().exists()).isTrue();
 	}
@@ -57,11 +56,9 @@ public class PathEditorTests {
 		PropertyEditor pathEditor = new PathEditor();
 		pathEditor.setAsText("file:/no_way_this_file_is_found.doc");
 		Object value = pathEditor.getValue();
-		boolean condition1 = value instanceof Path;
-		assertThat(condition1).isTrue();
+		assertThat(value instanceof Path).isTrue();
 		Path path = (Path) value;
-		boolean condition = !path.toFile().exists();
-		assertThat(condition).isTrue();
+		assertThat(!path.toFile().exists()).isTrue();
 	}
 
 	@Test
@@ -69,11 +66,9 @@ public class PathEditorTests {
 		PropertyEditor pathEditor = new PathEditor();
 		pathEditor.setAsText("/no_way_this_file_is_found.doc");
 		Object value = pathEditor.getValue();
-		boolean condition1 = value instanceof Path;
-		assertThat(condition1).isTrue();
+		assertThat(value instanceof Path).isTrue();
 		Path path = (Path) value;
-		boolean condition = !path.toFile().exists();
-		assertThat(condition).isTrue();
+		assertThat(!path.toFile().exists()).isTrue();
 	}
 
 	@Test
@@ -81,23 +76,26 @@ public class PathEditorTests {
 		PropertyEditor pathEditor = new PathEditor();
 		pathEditor.setAsText("C:\\no_way_this_file_is_found.doc");
 		Object value = pathEditor.getValue();
-		boolean condition1 = value instanceof Path;
-		assertThat(condition1).isTrue();
+		assertThat(value instanceof Path).isTrue();
 		Path path = (Path) value;
-		boolean condition = !path.toFile().exists();
-		assertThat(condition).isTrue();
+		assertThat(!path.toFile().exists()).isTrue();
 	}
 
 	@Test
 	public void testWindowsAbsoluteFilePath() {
 		PropertyEditor pathEditor = new PathEditor();
-		pathEditor.setAsText("file://C:\\no_way_this_file_is_found.doc");
-		Object value = pathEditor.getValue();
-		boolean condition1 = value instanceof Path;
-		assertThat(condition1).isTrue();
-		Path path = (Path) value;
-		boolean condition = !path.toFile().exists();
-		assertThat(condition).isTrue();
+		try {
+			pathEditor.setAsText("file://C:\\no_way_this_file_is_found.doc");
+			Object value = pathEditor.getValue();
+			assertThat(value instanceof Path).isTrue();
+			Path path = (Path) value;
+			assertThat(!path.toFile().exists()).isTrue();
+		}
+		catch (IllegalArgumentException ex) {
+			if (File.separatorChar == '\\') {  // on Windows, otherwise silently ignore
+				throw ex;
+			}
+		}
 	}
 
 	@Test
@@ -107,8 +105,7 @@ public class PathEditorTests {
 				ClassUtils.getShortName(getClass()) + ".class";
 		pathEditor.setAsText(fileName);
 		Object value = pathEditor.getValue();
-		boolean condition = value instanceof Path;
-		assertThat(condition).isTrue();
+		assertThat(value instanceof Path).isTrue();
 		Path path = (Path) value;
 		File file = path.toFile();
 		assertThat(file.exists()).isTrue();
@@ -126,8 +123,7 @@ public class PathEditorTests {
 				ClassUtils.getShortName(getClass()) + ".clazz";
 		pathEditor.setAsText(fileName);
 		Object value = pathEditor.getValue();
-		boolean condition = value instanceof Path;
-		assertThat(condition).isTrue();
+		assertThat(value instanceof Path).isTrue();
 		Path path = (Path) value;
 		File file = path.toFile();
 		assertThat(file.exists()).isFalse();

spring-context-indexer/src/main/java/org/springframework/context/index/processor/CandidateComponentsIndexer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,7 +19,6 @@ package org.springframework.context.index.processor;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Collections;
-import java.util.EnumSet;
 import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Set;
@@ -37,7 +36,7 @@ import javax.lang.model.element.Modifier;
 import javax.lang.model.element.TypeElement;
 
 /**
- * Annotation {@link Processor} that writes {@link CandidateComponentsMetadata}
+ * Annotation {@link Processor} that writes a {@link CandidateComponentsMetadata}
  * file for spring components.
  *
  * @author Stephane Nicoll
@@ -46,9 +45,6 @@ import javax.lang.model.element.TypeElement;
  */
 public class CandidateComponentsIndexer implements Processor {
 
-	private static final Set<ElementKind> TYPE_KINDS =
-			Collections.unmodifiableSet(EnumSet.of(ElementKind.CLASS, ElementKind.INTERFACE));
-
 	private MetadataStore metadataStore;
 
 	private MetadataCollector metadataCollector;
@@ -136,7 +132,8 @@ public class CandidateComponentsIndexer implements Processor {
 	private static List<TypeElement> staticTypesIn(Iterable<? extends Element> elements) {
 		List<TypeElement> list = new ArrayList<>();
 		for (Element element : elements) {
-			if (TYPE_KINDS.contains(element.getKind()) && element.getModifiers().contains(Modifier.STATIC)) {
+			if ((element.getKind().isClass() || element.getKind() == ElementKind.INTERFACE) &&
+					element.getModifiers().contains(Modifier.STATIC) && element instanceof TypeElement) {
 				list.add((TypeElement) element);
 			}
 		}

spring-context-indexer/src/main/java/org/springframework/context/index/processor/IndexedStereotypesProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -26,7 +26,7 @@ import javax.lang.model.element.ElementKind;
 
 /**
  * A {@link StereotypesProvider} implementation that extracts the stereotypes
- * flagged by the {@value INDEXED_ANNOTATION} annotation. This implementation
+ * flagged by the {@value #INDEXED_ANNOTATION} annotation. This implementation
  * honors stereotypes defined this way on meta-annotations.
  *
  * @author Stephane Nicoll
@@ -48,7 +48,7 @@ class IndexedStereotypesProvider implements StereotypesProvider {
 	public Set<String> getStereotypes(Element element) {
 		Set<String> stereotypes = new LinkedHashSet<>();
 		ElementKind kind = element.getKind();
-		if (kind != ElementKind.CLASS && kind != ElementKind.INTERFACE) {
+		if (!kind.isClass() && kind != ElementKind.INTERFACE) {
 			return stereotypes;
 		}
 		Set<Element> seen = new HashSet<>();

spring-context-indexer/src/main/java/org/springframework/context/index/processor/PackageInfoStereotypesProvider.java

@@ -24,7 +24,7 @@ import javax.lang.model.element.ElementKind;
 
 /**
  * A {@link StereotypesProvider} implementation that provides the
- * {@value STEREOTYPE} stereotype for each package-info.
+ * {@value #STEREOTYPE} stereotype for each package-info.
  *
  * @author Stephane Nicoll
  * @since 5.0

spring-context-indexer/src/main/java/org/springframework/context/index/processor/StandardStereotypesProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -24,8 +24,8 @@ import javax.lang.model.element.Element;
 import javax.lang.model.element.ElementKind;
 
 /**
- * A {@link StereotypesProvider} that extract a stereotype for each
- * {@code javax.*} annotation placed on a class or interface.
+ * A {@link StereotypesProvider} that extracts a stereotype for each
+ * {@code javax.*} annotation <i>present</i> on a class or interface.
  *
  * @author Stephane Nicoll
  * @since 5.0

spring-context-indexer/src/main/java/org/springframework/context/index/processor/StereotypesProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,7 +22,7 @@ import javax.lang.model.element.Element;
 
 /**
  * Provide the list of stereotypes that match an {@link Element}.
- * If an element has one more stereotypes, it is referenced in the index
+ * <p>If an element has one or more stereotypes, it is referenced in the index
  * of candidate components and each stereotype can be queried individually.
  *
  * @author Stephane Nicoll

spring-context-support/src/main/java/org/springframework/cache/ehcache/EhCacheManagerFactoryBean.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -130,8 +130,8 @@ public class EhCacheManagerFactoryBean implements FactoryBean<CacheManager>, Ini
 
 	@Override
 	public void afterPropertiesSet() throws CacheException {
-		if (logger.isInfoEnabled()) {
-			logger.info("Initializing EhCache CacheManager" +
+		if (logger.isDebugEnabled()) {
+			logger.debug("Initializing EhCache CacheManager" +
 					(this.cacheManagerName != null ? " '" + this.cacheManagerName + "'" : ""));
 		}
 
@@ -188,8 +188,8 @@ public class EhCacheManagerFactoryBean implements FactoryBean<CacheManager>, Ini
 	@Override
 	public void destroy() {
 		if (this.cacheManager != null && this.locallyManaged) {
-			if (logger.isInfoEnabled()) {
-				logger.info("Shutting down EhCache CacheManager" +
+			if (logger.isDebugEnabled()) {
+				logger.debug("Shutting down EhCache CacheManager" +
 						(this.cacheManagerName != null ? " '" + this.cacheManagerName + "'" : ""));
 			}
 			this.cacheManager.shutdown();

spring-context-support/src/main/java/org/springframework/cache/jcache/interceptor/AbstractJCacheOperation.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -138,7 +138,7 @@ abstract class AbstractJCacheOperation<A extends Annotation> implements JCacheOp
 
 	@Override
 	public String toString() {
-		return getOperationDescription().append("]").toString();
+		return getOperationDescription().append(']').toString();
 	}
 
 	/**
@@ -148,7 +148,7 @@ abstract class AbstractJCacheOperation<A extends Annotation> implements JCacheOp
 	protected StringBuilder getOperationDescription() {
 		StringBuilder result = new StringBuilder();
 		result.append(getClass().getSimpleName());
-		result.append("[");
+		result.append('[');
 		result.append(this.methodDetails);
 		return result;
 	}

spring-context/src/main/java/org/springframework/cache/interceptor/CacheAspectSupport.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -221,11 +221,11 @@ public abstract class CacheAspectSupport extends AbstractCacheInvoker
 			}
 			catch (NoUniqueBeanDefinitionException ex) {
 				throw new IllegalStateException("No CacheResolver specified, and no unique bean of type " +
-						"CacheManager found. Mark one as primary or declare a specific CacheManager to use.");
+						"CacheManager found. Mark one as primary or declare a specific CacheManager to use.", ex);
 			}
 			catch (NoSuchBeanDefinitionException ex) {
 				throw new IllegalStateException("No CacheResolver specified, and no bean of type CacheManager found. " +
-						"Register a CacheManager bean or remove the @EnableCaching annotation from your configuration.");
+						"Register a CacheManager bean or remove the @EnableCaching annotation from your configuration.", ex);
 			}
 		}
 		this.initialized = true;

spring-context/src/main/java/org/springframework/cache/interceptor/CacheEvictOperation.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -71,9 +71,9 @@ public class CacheEvictOperation extends CacheOperation {
 		@Override
 		protected StringBuilder getOperationDescription() {
 			StringBuilder sb = super.getOperationDescription();
-			sb.append(",");
+			sb.append(',');
 			sb.append(this.cacheWide);
-			sb.append(",");
+			sb.append(',');
 			sb.append(this.beforeInvocation);
 			return sb;
 		}

spring-context/src/main/java/org/springframework/cache/interceptor/CacheOperation.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -216,13 +216,13 @@ public abstract class CacheOperation implements BasicOperation {
 		 */
 		protected StringBuilder getOperationDescription() {
 			StringBuilder result = new StringBuilder(getClass().getSimpleName());
-			result.append("[").append(this.name);
+			result.append('[').append(this.name);
 			result.append("] caches=").append(this.cacheNames);
 			result.append(" | key='").append(this.key);
 			result.append("' | keyGenerator='").append(this.keyGenerator);
 			result.append("' | cacheManager='").append(this.cacheManager);
 			result.append("' | cacheResolver='").append(this.cacheResolver);
-			result.append("' | condition='").append(this.condition).append("'");
+			result.append("' | condition='").append(this.condition).append('\'');
 			return result;
 		}
 

spring-context/src/main/java/org/springframework/cache/interceptor/CachePutOperation.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -66,7 +66,7 @@ public class CachePutOperation extends CacheOperation {
 			StringBuilder sb = super.getOperationDescription();
 			sb.append(" | unless='");
 			sb.append(this.unless);
-			sb.append("'");
+			sb.append('\'');
 			return sb;
 		}
 

spring-context/src/main/java/org/springframework/cache/interceptor/CacheableOperation.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -79,10 +79,10 @@ public class CacheableOperation extends CacheOperation {
 			StringBuilder sb = super.getOperationDescription();
 			sb.append(" | unless='");
 			sb.append(this.unless);
-			sb.append("'");
+			sb.append('\'');
 			sb.append(" | sync='");
 			sb.append(this.sync);
-			sb.append("'");
+			sb.append('\'');
 			return sb;
 		}
 

spring-context/src/main/java/org/springframework/context/ApplicationEvent.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,6 +16,7 @@
 
 package org.springframework.context;
 
+import java.time.Clock;
 import java.util.EventObject;
 
 /**
@@ -37,18 +38,37 @@ public abstract class ApplicationEvent extends EventObject {
 
 
 	/**
-	 * Create a new {@code ApplicationEvent}.
+	 * Create a new {@code ApplicationEvent} with its {@link #getTimestamp() timestamp}
+	 * set to {@link System#currentTimeMillis()}.
 	 * @param source the object on which the event initially occurred or with
 	 * which the event is associated (never {@code null})
+	 * @see #ApplicationEvent(Object, Clock)
 	 */
 	public ApplicationEvent(Object source) {
 		super(source);
 		this.timestamp = System.currentTimeMillis();
 	}
 
+	/**
+	 * Create a new {@code ApplicationEvent} with its {@link #getTimestamp() timestamp}
+	 * set to the value returned by {@link Clock#millis()} in the provided {@link Clock}.
+	 * <p>This constructor is typically used in testing scenarios.
+	 * @param source the object on which the event initially occurred or with
+	 * which the event is associated (never {@code null})
+	 * @param clock a clock which will provide the timestamp
+	 * @since 5.3.8
+	 * @see #ApplicationEvent(Object)
+	 */
+	public ApplicationEvent(Object source, Clock clock) {
+		super(source);
+		this.timestamp = clock.millis();
+	}
+
 
 	/**
-	 * Return the system time in milliseconds when the event occurred.
+	 * Return the time in milliseconds when the event occurred.
+	 * @see #ApplicationEvent(Object)
+	 * @see #ApplicationEvent(Object, Clock)
 	 */
 	public final long getTimestamp() {
 		return this.timestamp;

spring-context/src/main/java/org/springframework/context/annotation/BeanMethod.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,13 +19,15 @@ package org.springframework.context.annotation;
 import org.springframework.beans.factory.parsing.Problem;
 import org.springframework.beans.factory.parsing.ProblemReporter;
 import org.springframework.core.type.MethodMetadata;
+import org.springframework.lang.Nullable;
 
 /**
- * Represents a {@link Configuration @Configuration} class method marked with the
- * {@link Bean @Bean} annotation.
+ * Represents a {@link Configuration @Configuration} class method annotated with
+ * {@link Bean @Bean}.
  *
  * @author Chris Beams
  * @author Juergen Hoeller
+ * @author Sam Brannen
  * @since 3.0
  * @see ConfigurationClass
  * @see ConfigurationClassParser
@@ -33,7 +35,7 @@ import org.springframework.core.type.MethodMetadata;
  */
 final class BeanMethod extends ConfigurationMethod {
 
-	public BeanMethod(MethodMetadata metadata, ConfigurationClass configurationClass) {
+	BeanMethod(MethodMetadata metadata, ConfigurationClass configurationClass) {
 		super(metadata, configurationClass);
 	}
 
@@ -52,12 +54,28 @@ final class BeanMethod extends ConfigurationMethod {
 		}
 	}
 
+	@Override
+	public boolean equals(@Nullable Object obj) {
+		return ((this == obj) || ((obj instanceof BeanMethod) &&
+				this.metadata.equals(((BeanMethod) obj).metadata)));
+	}
+
+	@Override
+	public int hashCode() {
+		return this.metadata.hashCode();
+	}
+
+	@Override
+	public String toString() {
+		return "BeanMethod: " + this.metadata;
+	}
 
 	private class NonOverridableMethodError extends Problem {
 
-		public NonOverridableMethodError() {
+		NonOverridableMethodError() {
 			super(String.format("@Bean method '%s' must not be private or final; change the method's modifiers to continue",
 					getMetadata().getMethodName()), getResourceLocation());
 		}
 	}
+
 }

spring-context/src/main/java/org/springframework/context/annotation/ConfigurationClass.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -36,7 +36,7 @@ import org.springframework.util.ClassUtils;
 
 /**
  * Represents a user-defined {@link Configuration @Configuration} class.
- * Includes a set of {@link Bean} methods, including all such methods
+ * <p>Includes a set of {@link Bean} methods, including all such methods
  * defined in the ancestry of the class, in a 'flattened-out' manner.
  *
  * @author Chris Beams
@@ -74,7 +74,7 @@ final class ConfigurationClass {
 	 * @param beanName must not be {@code null}
 	 * @see ConfigurationClass#ConfigurationClass(Class, ConfigurationClass)
 	 */
-	public ConfigurationClass(MetadataReader metadataReader, String beanName) {
+	ConfigurationClass(MetadataReader metadataReader, String beanName) {
 		Assert.notNull(beanName, "Bean name must not be null");
 		this.metadata = metadataReader.getAnnotationMetadata();
 		this.resource = metadataReader.getResource();
@@ -89,7 +89,7 @@ final class ConfigurationClass {
 	 * @param importedBy the configuration class importing this one or {@code null}
 	 * @since 3.1.1
 	 */
-	public ConfigurationClass(MetadataReader metadataReader, @Nullable ConfigurationClass importedBy) {
+	ConfigurationClass(MetadataReader metadataReader, @Nullable ConfigurationClass importedBy) {
 		this.metadata = metadataReader.getAnnotationMetadata();
 		this.resource = metadataReader.getResource();
 		this.importedBy.add(importedBy);
@@ -101,7 +101,7 @@ final class ConfigurationClass {
 	 * @param beanName name of the {@code @Configuration} class bean
 	 * @see ConfigurationClass#ConfigurationClass(Class, ConfigurationClass)
 	 */
-	public ConfigurationClass(Class<?> clazz, String beanName) {
+	ConfigurationClass(Class<?> clazz, String beanName) {
 		Assert.notNull(beanName, "Bean name must not be null");
 		this.metadata = AnnotationMetadata.introspect(clazz);
 		this.resource = new DescriptiveResource(clazz.getName());
@@ -116,7 +116,7 @@ final class ConfigurationClass {
 	 * @param importedBy the configuration class importing this one (or {@code null})
 	 * @since 3.1.1
 	 */
-	public ConfigurationClass(Class<?> clazz, @Nullable ConfigurationClass importedBy) {
+	ConfigurationClass(Class<?> clazz, @Nullable ConfigurationClass importedBy) {
 		this.metadata = AnnotationMetadata.introspect(clazz);
 		this.resource = new DescriptiveResource(clazz.getName());
 		this.importedBy.add(importedBy);
@@ -128,7 +128,7 @@ final class ConfigurationClass {
 	 * @param beanName name of the {@code @Configuration} class bean
 	 * @see ConfigurationClass#ConfigurationClass(Class, ConfigurationClass)
 	 */
-	public ConfigurationClass(AnnotationMetadata metadata, String beanName) {
+	ConfigurationClass(AnnotationMetadata metadata, String beanName) {
 		Assert.notNull(beanName, "Bean name must not be null");
 		this.metadata = metadata;
 		this.resource = new DescriptiveResource(metadata.getClassName());
@@ -136,19 +136,19 @@ final class ConfigurationClass {
 	}
 
 
-	public AnnotationMetadata getMetadata() {
+	AnnotationMetadata getMetadata() {
 		return this.metadata;
 	}
 
-	public Resource getResource() {
+	Resource getResource() {
 		return this.resource;
 	}
 
-	public String getSimpleName() {
+	String getSimpleName() {
 		return ClassUtils.getShortName(getMetadata().getClassName());
 	}
 
-	public void setBeanName(String beanName) {
+	void setBeanName(String beanName) {
 		this.beanName = beanName;
 	}
 
@@ -171,7 +171,7 @@ final class ConfigurationClass {
 	 * Merge the imported-by declarations from the given configuration class into this one.
 	 * @since 4.0.5
 	 */
-	public void mergeImportedBy(ConfigurationClass otherConfigClass) {
+	void mergeImportedBy(ConfigurationClass otherConfigClass) {
 		this.importedBy.addAll(otherConfigClass.importedBy);
 	}
 
@@ -181,35 +181,35 @@ final class ConfigurationClass {
 	 * @since 4.0.5
 	 * @see #isImported()
 	 */
-	public Set<ConfigurationClass> getImportedBy() {
+	Set<ConfigurationClass> getImportedBy() {
 		return this.importedBy;
 	}
 
-	public void addBeanMethod(BeanMethod method) {
+	void addBeanMethod(BeanMethod method) {
 		this.beanMethods.add(method);
 	}
 
-	public Set<BeanMethod> getBeanMethods() {
+	Set<BeanMethod> getBeanMethods() {
 		return this.beanMethods;
 	}
 
-	public void addImportedResource(String importedResource, Class<? extends BeanDefinitionReader> readerClass) {
+	void addImportedResource(String importedResource, Class<? extends BeanDefinitionReader> readerClass) {
 		this.importedResources.put(importedResource, readerClass);
 	}
 
-	public void addImportBeanDefinitionRegistrar(ImportBeanDefinitionRegistrar registrar, AnnotationMetadata importingClassMetadata) {
+	void addImportBeanDefinitionRegistrar(ImportBeanDefinitionRegistrar registrar, AnnotationMetadata importingClassMetadata) {
 		this.importBeanDefinitionRegistrars.put(registrar, importingClassMetadata);
 	}
 
-	public Map<ImportBeanDefinitionRegistrar, AnnotationMetadata> getImportBeanDefinitionRegistrars() {
+	Map<ImportBeanDefinitionRegistrar, AnnotationMetadata> getImportBeanDefinitionRegistrars() {
 		return this.importBeanDefinitionRegistrars;
 	}
 
-	public Map<String, Class<? extends BeanDefinitionReader>> getImportedResources() {
+	Map<String, Class<? extends BeanDefinitionReader>> getImportedResources() {
 		return this.importedResources;
 	}
 
-	public void validate(ProblemReporter problemReporter) {
+	void validate(ProblemReporter problemReporter) {
 		// A configuration class may not be final (CGLIB limitation) unless it declares proxyBeanMethods=false
 		Map<String, Object> attributes = this.metadata.getAnnotationAttributes(Configuration.class.getName());
 		if (attributes != null && (Boolean) attributes.get("proxyBeanMethods")) {
@@ -244,7 +244,7 @@ final class ConfigurationClass {
 	 */
 	private class FinalConfigurationProblem extends Problem {
 
-		public FinalConfigurationProblem() {
+		FinalConfigurationProblem() {
 			super(String.format("@Configuration class '%s' may not be final. Remove the final modifier to continue.",
 					getSimpleName()), new Location(getResource(), getMetadata()));
 		}

spring-context/src/main/java/org/springframework/context/annotation/ConfigurationMethod.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -51,18 +51,9 @@ abstract class ConfigurationMethod {
 		return new Location(this.configurationClass.getResource(), this.metadata);
 	}
 
-	String getFullyQualifiedMethodName() {
-		return this.metadata.getDeclaringClassName() + "#" + this.metadata.getMethodName();
+	void validate(ProblemReporter problemReporter) {
 	}
 
-	static String getShortMethodName(String fullyQualifiedMethodName) {
-		return fullyQualifiedMethodName.substring(fullyQualifiedMethodName.indexOf('#') + 1);
-	}
-
-	public void validate(ProblemReporter problemReporter) {
-	}
-
-
 	@Override
 	public String toString() {
 		return String.format("[%s:name=%s,declaringClass=%s]",

spring-context/src/main/java/org/springframework/context/event/ApplicationListenerMethodAdapter.java

@@ -396,7 +396,7 @@ public class ApplicationListenerMethodAdapter implements GenericApplicationListe
 	 * @param message error message to append the HandlerMethod details to
 	 */
 	protected String getDetailedErrorMessage(Object bean, String message) {
-		StringBuilder sb = new StringBuilder(message).append("\n");
+		StringBuilder sb = new StringBuilder(message).append('\n');
 		sb.append("HandlerMethod details: \n");
 		sb.append("Bean [").append(bean.getClass().getName()).append("]\n");
 		sb.append("Method [").append(this.method.toGenericString()).append("]\n");
@@ -426,7 +426,7 @@ public class ApplicationListenerMethodAdapter implements GenericApplicationListe
 		StringBuilder sb = new StringBuilder(getDetailedErrorMessage(bean, message));
 		sb.append("Resolved arguments: \n");
 		for (int i = 0; i < resolvedArgs.length; i++) {
-			sb.append("[").append(i).append("] ");
+			sb.append('[').append(i).append("] ");
 			if (resolvedArgs[i] == null) {
 				sb.append("[null] \n");
 			}

spring-context/src/main/java/org/springframework/context/event/EventListener.java

@@ -84,6 +84,7 @@ import org.springframework.core.annotation.AliasFor;
  * @author Sam Brannen
  * @since 4.2
  * @see EventListenerMethodProcessor
+ * @see org.springframework.transaction.event.TransactionalEventListener
  */
 @Target({ElementType.METHOD, ElementType.ANNOTATION_TYPE})
 @Retention(RetentionPolicy.RUNTIME)
@@ -133,7 +134,7 @@ public @interface EventListener {
 	 * An optional identifier for the listener, defaulting to the fully-qualified
 	 * signature of the declaring method (e.g. "mypackage.MyClass.myMethod()").
 	 * @since 5.3.5
-	 * @see org.springframework.context.ApplicationListener#getListenerId()
+	 * @see SmartApplicationListener#getListenerId()
 	 * @see ApplicationEventMulticaster#removeApplicationListeners(Predicate)
 	 */
 	String id() default "";

spring-context/src/main/java/org/springframework/context/support/LiveBeansView.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -205,12 +205,12 @@ public class LiveBeansView implements LiveBeansViewMBean, ApplicationContextAwar
 				}
 			}
 			result.append("]\n");
-			result.append("}");
+			result.append('}');
 			if (it.hasNext()) {
 				result.append(",\n");
 			}
 		}
-		result.append("]");
+		result.append(']');
 		return result.toString();
 	}
 

spring-context/src/main/java/org/springframework/context/support/MessageSourceSupport.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -57,17 +57,18 @@ public abstract class MessageSourceSupport {
 
 
 	/**
-	 * Set whether to always apply the {@code MessageFormat} rules,
-	 * parsing even messages without arguments.
-	 * <p>Default is "false": Messages without arguments are by default
-	 * returned as-is, without parsing them through MessageFormat.
-	 * Set this to "true" to enforce MessageFormat for all messages,
-	 * expecting all message texts to be written with MessageFormat escaping.
-	 * <p>For example, MessageFormat expects a single quote to be escaped
-	 * as "''". If your message texts are all written with such escaping,
-	 * even when not defining argument placeholders, you need to set this
-	 * flag to "true". Else, only message texts with actual arguments
-	 * are supposed to be written with MessageFormat escaping.
+	 * Set whether to always apply the {@code MessageFormat} rules, parsing even
+	 * messages without arguments.
+	 * <p>Default is {@code false}: Messages without arguments are by default
+	 * returned as-is, without parsing them through {@code MessageFormat}.
+	 * Set this to {@code true} to enforce {@code MessageFormat} for all messages,
+	 * expecting all message texts to be written with {@code MessageFormat} escaping.
+	 * <p>For example, {@code MessageFormat} expects a single quote to be escaped
+	 * as two adjacent single quotes ({@code "''"}). If your message texts are all
+	 * written with such escaping, even when not defining argument placeholders,
+	 * you need to set this flag to {@code true}. Otherwise, only message texts
+	 * with actual arguments are supposed to be written with {@code MessageFormat}
+	 * escaping.
 	 * @see java.text.MessageFormat
 	 */
 	public void setAlwaysUseMessageFormat(boolean alwaysUseMessageFormat) {
@@ -75,7 +76,7 @@ public abstract class MessageSourceSupport {
 	}
 
 	/**
-	 * Return whether to always apply the MessageFormat rules, parsing even
+	 * Return whether to always apply the {@code MessageFormat} rules, parsing even
 	 * messages without arguments.
 	 */
 	protected boolean isAlwaysUseMessageFormat() {
@@ -150,10 +151,10 @@ public abstract class MessageSourceSupport {
 	}
 
 	/**
-	 * Create a MessageFormat for the given message and Locale.
-	 * @param msg the message to create a MessageFormat for
-	 * @param locale the Locale to create a MessageFormat for
-	 * @return the MessageFormat instance
+	 * Create a {@code MessageFormat} for the given message and Locale.
+	 * @param msg the message to create a {@code MessageFormat} for
+	 * @param locale the Locale to create a {@code MessageFormat} for
+	 * @return the {@code MessageFormat} instance
 	 */
 	protected MessageFormat createMessageFormat(String msg, Locale locale) {
 		return new MessageFormat(msg, locale);

spring-context/src/main/java/org/springframework/format/annotation/DateTimeFormat.java

@@ -27,7 +27,7 @@ import java.lang.annotation.Target;
  *
  * <p>Supports formatting by style pattern, ISO date time pattern, or custom format pattern string.
  * Can be applied to {@link java.util.Date}, {@link java.util.Calendar}, {@link Long} (for
- * millisecond timestamps) as well as JSR-310 {@code java.time} and Joda-Time value types.
+ * millisecond timestamps) as well as JSR-310 {@code java.time} value types.
  *
  * <p>For style-based formatting, set the {@link #style} attribute to the desired style pattern code.
  * The first character of the code is the date style, and the second character is the time style.

spring-context/src/main/java/org/springframework/format/datetime/DateFormatter.java

@@ -219,9 +219,11 @@ public class DateFormatter implements Formatter<Date> {
 				}
 			}
 			if (this.source != null) {
-				throw new ParseException(
+				ParseException parseException = new ParseException(
 					String.format("Unable to parse date time value \"%s\" using configuration from %s", text, this.source),
 					ex.getErrorOffset());
+				parseException.initCause(ex);
+				throw parseException;
 			}
 			// else rethrow original exception
 			throw ex;

spring-context/src/main/java/org/springframework/format/datetime/standard/TemporalAccessorParser.java

@@ -101,7 +101,7 @@ public final class TemporalAccessorParser implements Parser<TemporalAccessor> {
 			if (this.source != null) {
 				throw new DateTimeParseException(
 					String.format("Unable to parse date time value \"%s\" using configuration from %s", text, this.source),
-					text, ex.getErrorIndex());
+					text, ex.getErrorIndex(), ex);
 			}
 			// else rethrow original exception
 			throw ex;

spring-context/src/main/java/org/springframework/scheduling/concurrent/ExecutorConfigurationSupport.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -177,8 +177,8 @@ public abstract class ExecutorConfigurationSupport extends CustomizableThreadFac
 	 * Set up the ExecutorService.
 	 */
 	public void initialize() {
-		if (logger.isInfoEnabled()) {
-			logger.info("Initializing ExecutorService" + (this.beanName != null ? " '" + this.beanName + "'" : ""));
+		if (logger.isDebugEnabled()) {
+			logger.debug("Initializing ExecutorService" + (this.beanName != null ? " '" + this.beanName + "'" : ""));
 		}
 		if (!this.threadNamePrefixSet && this.beanName != null) {
 			setThreadNamePrefix(this.beanName + "-");
@@ -214,8 +214,8 @@ public abstract class ExecutorConfigurationSupport extends CustomizableThreadFac
 	 * @see java.util.concurrent.ExecutorService#shutdownNow()
 	 */
 	public void shutdown() {
-		if (logger.isInfoEnabled()) {
-			logger.info("Shutting down ExecutorService" + (this.beanName != null ? " '" + this.beanName + "'" : ""));
+		if (logger.isDebugEnabled()) {
+			logger.debug("Shutting down ExecutorService" + (this.beanName != null ? " '" + this.beanName + "'" : ""));
 		}
 		if (this.executor != null) {
 			if (this.waitForTasksToCompleteOnShutdown) {

spring-context/src/main/java/org/springframework/scheduling/concurrent/ThreadPoolTaskExecutor.java

@@ -112,10 +112,10 @@ public class ThreadPoolTaskExecutor extends ExecutorConfigurationSupport
 	 */
 	public void setCorePoolSize(int corePoolSize) {
 		synchronized (this.poolSizeMonitor) {
-			this.corePoolSize = corePoolSize;
 			if (this.threadPoolExecutor != null) {
 				this.threadPoolExecutor.setCorePoolSize(corePoolSize);
 			}
+			this.corePoolSize = corePoolSize;
 		}
 	}
 
@@ -135,10 +135,10 @@ public class ThreadPoolTaskExecutor extends ExecutorConfigurationSupport
 	 */
 	public void setMaxPoolSize(int maxPoolSize) {
 		synchronized (this.poolSizeMonitor) {
-			this.maxPoolSize = maxPoolSize;
 			if (this.threadPoolExecutor != null) {
 				this.threadPoolExecutor.setMaximumPoolSize(maxPoolSize);
 			}
+			this.maxPoolSize = maxPoolSize;
 		}
 	}
 
@@ -158,10 +158,10 @@ public class ThreadPoolTaskExecutor extends ExecutorConfigurationSupport
 	 */
 	public void setKeepAliveSeconds(int keepAliveSeconds) {
 		synchronized (this.poolSizeMonitor) {
-			this.keepAliveSeconds = keepAliveSeconds;
 			if (this.threadPoolExecutor != null) {
 				this.threadPoolExecutor.setKeepAliveTime(keepAliveSeconds, TimeUnit.SECONDS);
 			}
+			this.keepAliveSeconds = keepAliveSeconds;
 		}
 	}
 

spring-context/src/main/java/org/springframework/scheduling/concurrent/ThreadPoolTaskScheduler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -53,6 +53,8 @@ import org.springframework.util.concurrent.ListenableFutureTask;
  * @since 3.0
  * @see #setPoolSize
  * @see #setRemoveOnCancelPolicy
+ * @see #setContinueExistingPeriodicTasksAfterShutdownPolicy
+ * @see #setExecuteExistingDelayedTasksAfterShutdownPolicy
  * @see #setThreadFactory
  * @see #setErrorHandler
  */
@@ -64,6 +66,10 @@ public class ThreadPoolTaskScheduler extends ExecutorConfigurationSupport
 
 	private volatile boolean removeOnCancelPolicy;
 
+	private volatile boolean continueExistingPeriodicTasksAfterShutdownPolicy;
+
+	private volatile boolean executeExistingDelayedTasksAfterShutdownPolicy = true;
+
 	@Nullable
 	private volatile ErrorHandler errorHandler;
 
@@ -84,26 +90,54 @@ public class ThreadPoolTaskScheduler extends ExecutorConfigurationSupport
 	 */
 	public void setPoolSize(int poolSize) {
 		Assert.isTrue(poolSize > 0, "'poolSize' must be 1 or higher");
-		this.poolSize = poolSize;
 		if (this.scheduledExecutor instanceof ScheduledThreadPoolExecutor) {
 			((ScheduledThreadPoolExecutor) this.scheduledExecutor).setCorePoolSize(poolSize);
 		}
+		this.poolSize = poolSize;
 	}
 
 	/**
 	 * Set the remove-on-cancel mode on {@link ScheduledThreadPoolExecutor}.
 	 * <p>Default is {@code false}. If set to {@code true}, the target executor will be
-	 * switched into remove-on-cancel mode (if possible, with a soft fallback otherwise).
+	 * switched into remove-on-cancel mode (if possible).
 	 * <p><b>This setting can be modified at runtime, for example through JMX.</b>
+	 * @see ScheduledThreadPoolExecutor#setRemoveOnCancelPolicy
 	 */
-	public void setRemoveOnCancelPolicy(boolean removeOnCancelPolicy) {
-		this.removeOnCancelPolicy = removeOnCancelPolicy;
+	public void setRemoveOnCancelPolicy(boolean flag) {
 		if (this.scheduledExecutor instanceof ScheduledThreadPoolExecutor) {
-			((ScheduledThreadPoolExecutor) this.scheduledExecutor).setRemoveOnCancelPolicy(removeOnCancelPolicy);
+			((ScheduledThreadPoolExecutor) this.scheduledExecutor).setRemoveOnCancelPolicy(flag);
 		}
-		else if (removeOnCancelPolicy && this.scheduledExecutor != null) {
-			logger.debug("Could not apply remove-on-cancel policy - not a ScheduledThreadPoolExecutor");
+		this.removeOnCancelPolicy = flag;
+	}
+
+	/**
+	 * Set whether to continue existing periodic tasks even when this executor has been shutdown.
+	 * <p>Default is {@code false}. If set to {@code true}, the target executor will be
+	 * switched into continuing periodic tasks (if possible).
+	 * <p><b>This setting can be modified at runtime, for example through JMX.</b>
+	 * @since 5.3.9
+	 * @see ScheduledThreadPoolExecutor#setContinueExistingPeriodicTasksAfterShutdownPolicy
+	 */
+	public void setContinueExistingPeriodicTasksAfterShutdownPolicy(boolean flag) {
+		if (this.scheduledExecutor instanceof ScheduledThreadPoolExecutor) {
+			((ScheduledThreadPoolExecutor) this.scheduledExecutor).setContinueExistingPeriodicTasksAfterShutdownPolicy(flag);
 		}
+		this.continueExistingPeriodicTasksAfterShutdownPolicy = flag;
+	}
+
+	/**
+	 * Set whether to execute existing delayed tasks even when this executor has been shutdown.
+	 * <p>Default is {@code true}. If set to {@code false}, the target executor will be
+	 * switched into dropping remaining tasks (if possible).
+	 * <p><b>This setting can be modified at runtime, for example through JMX.</b>
+	 * @since 5.3.9
+	 * @see ScheduledThreadPoolExecutor#setExecuteExistingDelayedTasksAfterShutdownPolicy
+	 */
+	public void setExecuteExistingDelayedTasksAfterShutdownPolicy(boolean flag) {
+		if (this.scheduledExecutor instanceof ScheduledThreadPoolExecutor) {
+			((ScheduledThreadPoolExecutor) this.scheduledExecutor).setExecuteExistingDelayedTasksAfterShutdownPolicy(flag);
+		}
+		this.executeExistingDelayedTasksAfterShutdownPolicy = flag;
 	}
 
 	/**
@@ -135,12 +169,16 @@ public class ThreadPoolTaskScheduler extends ExecutorConfigurationSupport
 
 		this.scheduledExecutor = createExecutor(this.poolSize, threadFactory, rejectedExecutionHandler);
 
-		if (this.removeOnCancelPolicy) {
-			if (this.scheduledExecutor instanceof ScheduledThreadPoolExecutor) {
-				((ScheduledThreadPoolExecutor) this.scheduledExecutor).setRemoveOnCancelPolicy(true);
+		if (this.scheduledExecutor instanceof ScheduledThreadPoolExecutor) {
+			ScheduledThreadPoolExecutor scheduledPoolExecutor = (ScheduledThreadPoolExecutor) this.scheduledExecutor;
+			if (this.removeOnCancelPolicy) {
+				scheduledPoolExecutor.setRemoveOnCancelPolicy(true);
 			}
-			else {
-				logger.debug("Could not apply remove-on-cancel policy - not a ScheduledThreadPoolExecutor");
+			if (this.continueExistingPeriodicTasksAfterShutdownPolicy) {
+				scheduledPoolExecutor.setContinueExistingPeriodicTasksAfterShutdownPolicy(true);
+			}
+			if (!this.executeExistingDelayedTasksAfterShutdownPolicy) {
+				scheduledPoolExecutor.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
 			}
 		}
 
@@ -201,18 +239,6 @@ public class ThreadPoolTaskScheduler extends ExecutorConfigurationSupport
 		return getScheduledThreadPoolExecutor().getPoolSize();
 	}
 
-	/**
-	 * Return the current setting for the remove-on-cancel mode.
-	 * <p>Requires an underlying {@link ScheduledThreadPoolExecutor}.
-	 */
-	public boolean isRemoveOnCancelPolicy() {
-		if (this.scheduledExecutor == null) {
-			// Not initialized yet: return our setting for the time being.
-			return this.removeOnCancelPolicy;
-		}
-		return getScheduledThreadPoolExecutor().getRemoveOnCancelPolicy();
-	}
-
 	/**
 	 * Return the number of currently active threads.
 	 * <p>Requires an underlying {@link ScheduledThreadPoolExecutor}.
@@ -227,6 +253,21 @@ public class ThreadPoolTaskScheduler extends ExecutorConfigurationSupport
 		return getScheduledThreadPoolExecutor().getActiveCount();
 	}
 
+	/**
+	 * Return the current setting for the remove-on-cancel mode.
+	 * <p>Requires an underlying {@link ScheduledThreadPoolExecutor}.
+	 * @deprecated as of 5.3.9, in favor of direct
+	 * {@link #getScheduledThreadPoolExecutor()} access
+	 */
+	@Deprecated
+	public boolean isRemoveOnCancelPolicy() {
+		if (this.scheduledExecutor == null) {
+			// Not initialized yet: return our setting for the time being.
+			return this.removeOnCancelPolicy;
+		}
+		return getScheduledThreadPoolExecutor().getRemoveOnCancelPolicy();
+	}
+
 
 	// SchedulingTaskExecutor implementation
 

spring-context/src/main/java/org/springframework/scheduling/support/BitsCronField.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -192,6 +192,11 @@ final class BitsCronField extends CronField {
 			while (current != next && count++ < CronExpression.MAX_ATTEMPTS) {
 				temporal = type().elapseUntil(temporal, next);
 				current = type().get(temporal);
+				next = nextSetBit(current);
+				if (next == -1) {
+					temporal = type().rollForward(temporal);
+					next = nextSetBit(0);
+				}
 			}
 			if (count >= CronExpression.MAX_ATTEMPTS) {
 				return null;

spring-context/src/main/java/org/springframework/scheduling/support/CronExpression.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -66,8 +66,9 @@ public final class CronExpression {
 			CronField daysOfWeek,
 			String expression) {
 
+		// reverse order, to make big changes first
 		// to make sure we end up at 0 nanos, we add an extra field
-		this.fields = new CronField[]{CronField.zeroNanos(), seconds, minutes, hours, daysOfMonth, months, daysOfWeek};
+		this.fields = new CronField[]{daysOfWeek, months, daysOfMonth, hours, minutes, seconds, CronField.zeroNanos()};
 		this.expression = expression;
 	}
 
@@ -202,6 +203,25 @@ public final class CronExpression {
 		}
 	}
 
+	/**
+	 * Determine whether the given string represents a valid cron expression.
+	 * @param expression the expression to evaluate
+	 * @return {@code true} if the given expression is a valid cron expression
+	 * @since 5.3.8
+	 */
+	public static boolean isValidExpression(@Nullable String expression) {
+		if (expression == null) {
+			return false;
+		}
+		try {
+			parse(expression);
+			return true;
+		}
+		catch (IllegalArgumentException ex) {
+			return false;
+		}
+	}
+
 
 	private static String resolveMacros(String expression) {
 		expression = expression.trim();

spring-context/src/main/java/org/springframework/scheduling/support/CronField.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -157,6 +157,11 @@ abstract class CronField {
 		return this.type;
 	}
 
+	@SuppressWarnings("unchecked")
+	protected static <T extends Temporal & Comparable<? super T>> T cast(Temporal temporal) {
+		return (T) temporal;
+	}
+
 
 	/**
 	 * Represents the type of cron field, i.e. seconds, minutes, hours,
@@ -225,9 +230,7 @@ abstract class CronField {
 		 * Elapse the given temporal for the difference between the current
 		 * value of this field and the goal value. Typically, the returned
 		 * temporal will have the given goal as the current value for this type,
-		 * but this is not the case for {@link #DAY_OF_MONTH}. For instance,
-		 * if {@code goal} is 31, and {@code temporal} is April 16th,
-		 * this method returns May 1st, because April 31st does not exist.
+		 * but this is not the case for {@link #DAY_OF_MONTH}.
 		 * @param temporal the temporal to elapse
 		 * @param goal the goal value
 		 * @param <T> the type of temporal
@@ -236,11 +239,18 @@ abstract class CronField {
 		 */
 		public <T extends Temporal & Comparable<? super T>> T elapseUntil(T temporal, int goal) {
 			int current = get(temporal);
+			ValueRange range = temporal.range(this.field);
 			if (current < goal) {
-				return this.field.getBaseUnit().addTo(temporal, goal - current);
+				if (range.isValidIntValue(goal)) {
+					return cast(temporal.with(this.field, goal));
+				}
+				else {
+					// goal is invalid, eg. 29th Feb, so roll forward
+					long amount = range.getMaximum() - current + 1;
+					return this.field.getBaseUnit().addTo(temporal, amount);
+				}
 			}
 			else {
-				ValueRange range = temporal.range(this.field);
 				long amount = goal + range.getMaximum() - current + 1 - range.getMinimum();
 				return this.field.getBaseUnit().addTo(temporal, amount);
 			}

spring-context/src/main/java/org/springframework/scheduling/support/QuartzCronField.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -326,12 +326,6 @@ final class QuartzCronField extends CronField {
 		}
 	}
 
-	@SuppressWarnings("unchecked")
-	private static <T extends Temporal & Comparable<? super T>> T cast(Temporal temporal) {
-		return (T) temporal;
-	}
-
-
 	@Override
 	public <T extends Temporal & Comparable<? super T>> T nextOrSame(T temporal) {
 		T result = adjust(temporal);
@@ -340,6 +334,9 @@ final class QuartzCronField extends CronField {
 				// We ended up before the start, roll forward and try again
 				temporal = this.rollForwardType.rollForward(temporal);
 				result = adjust(temporal);
+				if (result != null) {
+					result = type().reset(result);
+				}
 			}
 		}
 		return result;

spring-context/src/main/java/org/springframework/ui/ConcurrentModel.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -66,7 +66,8 @@ public class ConcurrentModel extends ConcurrentHashMap<String, Object> implement
 
 
 	@Override
-	public Object put(String key, Object value) {
+	@Nullable
+	public Object put(String key, @Nullable Object value) {
 		if (value != null) {
 			return super.put(key, value);
 		}

spring-context/src/main/java/org/springframework/validation/annotation/ValidationAnnotationUtils.java

@@ -0,0 +1,70 @@
+/*
+ * Copyright 2002-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.validation.annotation;
+
+import java.lang.annotation.Annotation;
+
+import org.springframework.core.annotation.AnnotationUtils;
+import org.springframework.lang.Nullable;
+
+/**
+ * Utility class for handling validation annotations.
+ * Mainly for internal use within the framework.
+ *
+ * @author Christoph Dreis
+ * @since 5.3.7
+ */
+public abstract class ValidationAnnotationUtils {
+
+	private static final Object[] EMPTY_OBJECT_ARRAY = new Object[0];
+
+	/**
+	 * Determine any validation hints by the given annotation.
+	 * <p>This implementation checks for {@code @javax.validation.Valid},
+	 * Spring's {@link org.springframework.validation.annotation.Validated},
+	 * and custom annotations whose name starts with "Valid".
+	 * @param ann the annotation (potentially a validation annotation)
+	 * @return the validation hints to apply (possibly an empty array),
+	 * or {@code null} if this annotation does not trigger any validation
+	 */
+	@Nullable
+	public static Object[] determineValidationHints(Annotation ann) {
+		Class<? extends Annotation> annotationType = ann.annotationType();
+		String annotationName = annotationType.getName();
+		if ("javax.validation.Valid".equals(annotationName)) {
+			return EMPTY_OBJECT_ARRAY;
+		}
+		Validated validatedAnn = AnnotationUtils.getAnnotation(ann, Validated.class);
+		if (validatedAnn != null) {
+			Object hints = validatedAnn.value();
+			return convertValidationHints(hints);
+		}
+		if (annotationType.getSimpleName().startsWith("Valid")) {
+			Object hints = AnnotationUtils.getValue(ann);
+			return convertValidationHints(hints);
+		}
+		return null;
+	}
+
+	private static Object[] convertValidationHints(@Nullable Object hints) {
+		if (hints == null) {
+			return EMPTY_OBJECT_ARRAY;
+		}
+		return (hints instanceof Object[] ? (Object[]) hints : new Object[]{hints});
+	}
+
+}

spring-context/src/main/java/org/springframework/validation/support/BindingAwareConcurrentModel.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,6 +18,7 @@ package org.springframework.validation.support;
 
 import java.util.Map;
 
+import org.springframework.lang.Nullable;
 import org.springframework.ui.ConcurrentModel;
 import org.springframework.validation.BindingResult;
 
@@ -36,17 +37,19 @@ import org.springframework.validation.BindingResult;
  * @author Rossen Stoyanchev
  * @since 5.0
  * @see BindingResult
+ * @see BindingAwareModelMap
  */
 @SuppressWarnings("serial")
 public class BindingAwareConcurrentModel extends ConcurrentModel {
 
 	@Override
-	public Object put(String key, Object value) {
+	@Nullable
+	public Object put(String key, @Nullable Object value) {
 		removeBindingResultIfNecessary(key, value);
 		return super.put(key, value);
 	}
 
-	private void removeBindingResultIfNecessary(String key, Object value) {
+	private void removeBindingResultIfNecessary(String key, @Nullable Object value) {
 		if (!key.startsWith(BindingResult.MODEL_KEY_PREFIX)) {
 			String resultKey = BindingResult.MODEL_KEY_PREFIX + key;
 			BindingResult result = (BindingResult) get(resultKey);

spring-context/src/main/java/org/springframework/validation/support/BindingAwareModelMap.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,6 +18,7 @@ package org.springframework.validation.support;
 
 import java.util.Map;
 
+import org.springframework.lang.Nullable;
 import org.springframework.ui.ExtendedModelMap;
 import org.springframework.validation.BindingResult;
 
@@ -39,7 +40,7 @@ import org.springframework.validation.BindingResult;
 public class BindingAwareModelMap extends ExtendedModelMap {
 
 	@Override
-	public Object put(String key, Object value) {
+	public Object put(String key, @Nullable Object value) {
 		removeBindingResultIfNecessary(key, value);
 		return super.put(key, value);
 	}
@@ -50,7 +51,7 @@ public class BindingAwareModelMap extends ExtendedModelMap {
 		super.putAll(map);
 	}
 
-	private void removeBindingResultIfNecessary(Object key, Object value) {
+	private void removeBindingResultIfNecessary(Object key, @Nullable Object value) {
 		if (key instanceof String) {
 			String attributeName = (String) key;
 			if (!attributeName.startsWith(BindingResult.MODEL_KEY_PREFIX)) {

spring-context/src/main/kotlin/org/springframework/context/support/BeanDefinitionDsl.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -1110,7 +1110,7 @@ open class BeanDefinitionDsl internal constructor (private val init: BeanDefinit
 		}
 
 		/**
-		 * Return an provider for the specified bean, allowing for lazy on-demand retrieval
+		 * Return a provider for the specified bean, allowing for lazy on-demand retrieval
 		 * of instances, including availability and uniqueness options.
 		 * @see org.springframework.beans.factory.BeanFactory.getBeanProvider
 		 */

spring-context/src/test/java/org/springframework/aop/framework/autoproxy/AutoProxyCreatorTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -28,6 +28,7 @@ import org.junit.jupiter.api.Test;
 import org.springframework.aop.TargetSource;
 import org.springframework.aop.framework.ProxyFactory;
 import org.springframework.aop.support.AopUtils;
+import org.springframework.aop.support.DefaultIntroductionAdvisor;
 import org.springframework.aop.target.SingletonTargetSource;
 import org.springframework.beans.MutablePropertyValues;
 import org.springframework.beans.factory.BeanFactory;
@@ -219,7 +220,7 @@ public class AutoProxyCreatorTests {
 
 		MutablePropertyValues pvs = new MutablePropertyValues();
 		pvs.add("proxyFactoryBean", "false");
-		sac.registerSingleton("testAutoProxyCreator", TestAutoProxyCreator.class, pvs);
+		sac.registerSingleton("testAutoProxyCreator", IntroductionTestAutoProxyCreator.class, pvs);
 
 		sac.registerSingleton("noInterfaces", NoInterfaces.class);
 		sac.registerSingleton("containerCallbackInterfacesOnly", ContainerCallbackInterfacesOnly.class);
@@ -248,9 +249,9 @@ public class AutoProxyCreatorTests {
 		singletonNoInterceptor.getName();
 		assertThat(tapc.testInterceptor.nrOfInvocations).isEqualTo(0);
 		singletonToBeProxied.getAge();
-		assertThat(tapc.testInterceptor.nrOfInvocations).isEqualTo(1);
-		prototypeToBeProxied.getSpouse();
 		assertThat(tapc.testInterceptor.nrOfInvocations).isEqualTo(2);
+		prototypeToBeProxied.getSpouse();
+		assertThat(tapc.testInterceptor.nrOfInvocations).isEqualTo(4);
 	}
 
 	@Test
@@ -404,7 +405,7 @@ public class AutoProxyCreatorTests {
 			else if (name.endsWith("ToBeProxied")) {
 				boolean isFactoryBean = FactoryBean.class.isAssignableFrom(beanClass);
 				if ((this.proxyFactoryBean && isFactoryBean) || (this.proxyObject && !isFactoryBean)) {
-					return new Object[] {this.testInterceptor};
+					return getAdvicesAndAdvisors();
 				}
 				else {
 					return DO_NOT_PROXY;
@@ -414,6 +415,10 @@ public class AutoProxyCreatorTests {
 				return PROXY_WITHOUT_ADDITIONAL_INTERCEPTORS;
 			}
 		}
+
+		protected Object[] getAdvicesAndAdvisors() {
+			return new Object[] {this.testInterceptor};
+		}
 	}
 
 
@@ -426,6 +431,17 @@ public class AutoProxyCreatorTests {
 	}
 
 
+	@SuppressWarnings("serial")
+	public static class IntroductionTestAutoProxyCreator extends TestAutoProxyCreator {
+
+		protected Object[] getAdvicesAndAdvisors() {
+			DefaultIntroductionAdvisor advisor = new DefaultIntroductionAdvisor(this.testInterceptor);
+			advisor.addInterface(Serializable.class);
+			return new Object[] {this.testInterceptor, advisor};
+		}
+	}
+
+
 	/**
 	 * Interceptor that counts the number of non-finalize method calls.
 	 */

spring-context/src/test/java/org/springframework/beans/factory/xml/QualifierAnnotationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -47,8 +47,9 @@ import static org.springframework.util.ClassUtils.convertClassNameToResourcePath
 public class QualifierAnnotationTests {
 
 	private static final String CLASSNAME = QualifierAnnotationTests.class.getName();
+
 	private static final String CONFIG_LOCATION =
-		format("classpath:%s-context.xml", convertClassNameToResourcePath(CLASSNAME));
+			format("classpath:%s-context.xml", convertClassNameToResourcePath(CLASSNAME));
 
 
 	@Test

spring-context/src/test/java/org/springframework/beans/factory/xml/XmlBeanFactoryTests.java

@@ -146,7 +146,7 @@ class XmlBeanFactoryTests {
 		assertThat(emmasJenks != georgiasJenks).as("Emma and georgia think they have a different boyfriend").isTrue();
 		assertThat(emmasJenks.getName().equals("Andrew")).as("Emmas jenks has right name").isTrue();
 		assertThat(emmasJenks != xbf.getBean("jenks")).as("Emmas doesn't equal new ref").isTrue();
-		assertThat(emmasJenks.getName().equals("Andrew")).as("Georgias jenks has right name").isTrue();
+		assertThat(georgiasJenks.getName().equals("Andrew")).as("Georgias jenks has right name").isTrue();
 		assertThat(emmasJenks.equals(georgiasJenks)).as("They are object equal").isTrue();
 		assertThat(emmasJenks.equals(xbf.getBean("jenks"))).as("They object equal direct ref").isTrue();
 	}

spring-context/src/test/java/org/springframework/cache/config/EnableCachingTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,6 +19,8 @@ package org.springframework.cache.config;
 import org.junit.jupiter.api.Test;
 
 import org.springframework.beans.factory.BeanCreationException;
+import org.springframework.beans.factory.NoSuchBeanDefinitionException;
+import org.springframework.beans.factory.NoUniqueBeanDefinitionException;
 import org.springframework.cache.CacheManager;
 import org.springframework.cache.annotation.CachingConfigurerSupport;
 import org.springframework.cache.annotation.EnableCaching;
@@ -87,6 +89,7 @@ public class EnableCachingTests extends AbstractCacheAnnotationTests {
 		}
 		catch (IllegalStateException ex) {
 			assertThat(ex.getMessage().contains("no unique bean of type CacheManager")).isTrue();
+			assertThat(ex).hasCauseInstanceOf(NoUniqueBeanDefinitionException.class);
 		}
 	}
 
@@ -121,6 +124,7 @@ public class EnableCachingTests extends AbstractCacheAnnotationTests {
 		}
 		catch (IllegalStateException ex) {
 			assertThat(ex.getMessage().contains("no bean of type CacheManager")).isTrue();
+			assertThat(ex).hasCauseInstanceOf(NoSuchBeanDefinitionException.class);
 		}
 	}
 

spring-context/src/test/java/org/springframework/context/annotation/BeanMethodPolymorphismTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -29,7 +29,7 @@ import static org.assertj.core.api.Assertions.assertThat;
 
 /**
  * Tests regarding overloading and overriding of bean methods.
- * Related to SPR-6618.
+ * <p>Related to SPR-6618.
  *
  * @author Chris Beams
  * @author Phillip Webb
@@ -41,7 +41,7 @@ public class BeanMethodPolymorphismTests {
 	@Test
 	public void beanMethodDetectedOnSuperClass() {
 		AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext(Config.class);
-		ctx.getBean("testBean", TestBean.class);
+		assertThat(ctx.getBean("testBean", TestBean.class)).isNotNull();
 	}
 
 	@Test

spring-context/src/test/java/org/springframework/context/annotation/ConfigurationClassAndBeanMethodTests.java

@@ -0,0 +1,202 @@
+/*
+ * Copyright 2002-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.context.annotation;
+
+import java.util.Comparator;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.beans.factory.parsing.FailFastProblemReporter;
+import org.springframework.beans.factory.support.DefaultListableBeanFactory;
+import org.springframework.core.env.StandardEnvironment;
+import org.springframework.core.io.DefaultResourceLoader;
+import org.springframework.core.type.classreading.CachingMetadataReaderFactory;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Integration tests for {@link ConfigurationClassParser}, {@link ConfigurationClass},
+ * and {@link BeanMethod}.
+ *
+ * @author Sam Brannen
+ * @since 5.3.9
+ */
+class ConfigurationClassAndBeanMethodTests {
+
+	@Test
+	void verifyEquals() throws Exception {
+		ConfigurationClass configurationClass1 = newConfigurationClass(Config1.class);
+		ConfigurationClass configurationClass2 = newConfigurationClass(Config1.class);
+		ConfigurationClass configurationClass3 = newConfigurationClass(Config2.class);
+
+		assertThat(configurationClass1.equals(null)).isFalse();
+		assertThat(configurationClass1).isNotSameAs(configurationClass2);
+
+		assertThat(configurationClass1.equals(configurationClass1)).isTrue();
+		assertThat(configurationClass2.equals(configurationClass2)).isTrue();
+		assertThat(configurationClass1.equals(configurationClass2)).isTrue();
+		assertThat(configurationClass2.equals(configurationClass1)).isTrue();
+
+		assertThat(configurationClass1.equals(configurationClass3)).isFalse();
+		assertThat(configurationClass3.equals(configurationClass2)).isFalse();
+
+		// ---------------------------------------------------------------------
+
+		List<BeanMethod> beanMethods1 = getBeanMethods(configurationClass1);
+		BeanMethod beanMethod_1_0 = beanMethods1.get(0);
+		BeanMethod beanMethod_1_1 = beanMethods1.get(1);
+		BeanMethod beanMethod_1_2 = beanMethods1.get(2);
+
+		List<BeanMethod> beanMethods2 = getBeanMethods(configurationClass2);
+		BeanMethod beanMethod_2_0 = beanMethods2.get(0);
+		BeanMethod beanMethod_2_1 = beanMethods2.get(1);
+		BeanMethod beanMethod_2_2 = beanMethods2.get(2);
+
+		List<BeanMethod> beanMethods3 = getBeanMethods(configurationClass3);
+		BeanMethod beanMethod_3_0 = beanMethods3.get(0);
+		BeanMethod beanMethod_3_1 = beanMethods3.get(1);
+		BeanMethod beanMethod_3_2 = beanMethods3.get(2);
+
+		assertThat(beanMethod_1_0.equals(null)).isFalse();
+		assertThat(beanMethod_1_0).isNotSameAs(beanMethod_2_0);
+
+		assertThat(beanMethod_1_0.equals(beanMethod_1_0)).isTrue();
+		assertThat(beanMethod_1_0.equals(beanMethod_2_0)).isTrue();
+		assertThat(beanMethod_1_1.equals(beanMethod_2_1)).isTrue();
+		assertThat(beanMethod_1_2.equals(beanMethod_2_2)).isTrue();
+
+		assertThat(beanMethod_1_0.getMetadata().getMethodName()).isEqualTo(beanMethod_3_0.getMetadata().getMethodName());
+		assertThat(beanMethod_1_0.equals(beanMethod_3_0)).isFalse();
+		assertThat(beanMethod_1_1.equals(beanMethod_3_1)).isFalse();
+		assertThat(beanMethod_1_2.equals(beanMethod_3_2)).isFalse();
+	}
+
+	@Test
+	void verifyHashCode() throws Exception {
+		ConfigurationClass configurationClass1 = newConfigurationClass(Config1.class);
+		ConfigurationClass configurationClass2 = newConfigurationClass(Config1.class);
+		ConfigurationClass configurationClass3 = newConfigurationClass(Config2.class);
+
+		assertThat(configurationClass1).hasSameHashCodeAs(configurationClass2);
+		assertThat(configurationClass1).doesNotHaveSameHashCodeAs(configurationClass3);
+
+		// ---------------------------------------------------------------------
+
+		List<BeanMethod> beanMethods1 = getBeanMethods(configurationClass1);
+		BeanMethod beanMethod_1_0 = beanMethods1.get(0);
+		BeanMethod beanMethod_1_1 = beanMethods1.get(1);
+		BeanMethod beanMethod_1_2 = beanMethods1.get(2);
+
+		List<BeanMethod> beanMethods2 = getBeanMethods(configurationClass2);
+		BeanMethod beanMethod_2_0 = beanMethods2.get(0);
+		BeanMethod beanMethod_2_1 = beanMethods2.get(1);
+		BeanMethod beanMethod_2_2 = beanMethods2.get(2);
+
+		List<BeanMethod> beanMethods3 = getBeanMethods(configurationClass3);
+		BeanMethod beanMethod_3_0 = beanMethods3.get(0);
+		BeanMethod beanMethod_3_1 = beanMethods3.get(1);
+		BeanMethod beanMethod_3_2 = beanMethods3.get(2);
+
+		assertThat(beanMethod_1_0).hasSameHashCodeAs(beanMethod_2_0);
+		assertThat(beanMethod_1_1).hasSameHashCodeAs(beanMethod_2_1);
+		assertThat(beanMethod_1_2).hasSameHashCodeAs(beanMethod_2_2);
+
+		assertThat(beanMethod_1_0).doesNotHaveSameHashCodeAs(beanMethod_3_0);
+		assertThat(beanMethod_1_1).doesNotHaveSameHashCodeAs(beanMethod_3_1);
+		assertThat(beanMethod_1_2).doesNotHaveSameHashCodeAs(beanMethod_3_2);
+	}
+
+	@Test
+	void verifyToString() throws Exception {
+		ConfigurationClass configurationClass = newConfigurationClass(Config1.class);
+		assertThat(configurationClass.toString())
+			.startsWith("ConfigurationClass: beanName 'Config1', class path resource");
+
+		List<BeanMethod> beanMethods = getBeanMethods(configurationClass);
+		String prefix = "BeanMethod: " + Config1.class.getName();
+		assertThat(beanMethods.get(0).toString()).isEqualTo(prefix + ".bean0()");
+		assertThat(beanMethods.get(1).toString()).isEqualTo(prefix + ".bean1(java.lang.String)");
+		assertThat(beanMethods.get(2).toString()).isEqualTo(prefix + ".bean2(java.lang.String,java.lang.Integer)");
+	}
+
+
+	private static ConfigurationClass newConfigurationClass(Class<?> clazz) throws Exception {
+		ConfigurationClassParser parser = newParser();
+		parser.parse(clazz.getName(), clazz.getSimpleName());
+		assertThat(parser.getConfigurationClasses()).hasSize(1);
+		return parser.getConfigurationClasses().iterator().next();
+	}
+
+	private static ConfigurationClassParser newParser() {
+		return new ConfigurationClassParser(
+				new CachingMetadataReaderFactory(),
+				new FailFastProblemReporter(),
+				new StandardEnvironment(),
+				new DefaultResourceLoader(),
+				new AnnotationBeanNameGenerator(),
+				new DefaultListableBeanFactory());
+	}
+
+	private static List<BeanMethod> getBeanMethods(ConfigurationClass configurationClass) {
+		List<BeanMethod> beanMethods = configurationClass.getBeanMethods().stream()
+				.sorted(Comparator.comparing(beanMethod -> beanMethod.getMetadata().getMethodName()))
+				.collect(Collectors.toList());
+		assertThat(beanMethods).hasSize(3);
+		return beanMethods;
+	}
+
+	static class Config1 {
+
+		@Bean
+		String bean0() {
+			return "";
+		}
+
+		@Bean
+		String bean1(String text) {
+			return "";
+		}
+
+		@Bean
+		String bean2(String text, Integer num) {
+			return "";
+		}
+
+	}
+
+	static class Config2 {
+
+		@Bean
+		String bean0() {
+			return "";
+		}
+
+		@Bean
+		String bean1(String text) {
+			return "";
+		}
+
+		@Bean
+		String bean2(String text, Integer num) {
+			return "";
+		}
+
+	}
+
+}

spring-context/src/test/java/org/springframework/format/datetime/DateFormattingTests.java

@@ -119,6 +119,39 @@ public class DateFormattingTests {
 		assertThat(binder.getBindingResult().getFieldValue("styleDate")).isEqualTo("10/31/09");
 	}
 
+	@Test
+	void styleDateWithInvalidFormat() {
+		String propertyName = "styleDate";
+		String propertyValue = "99/01/01";
+		MutablePropertyValues propertyValues = new MutablePropertyValues();
+		propertyValues.add(propertyName, propertyValue);
+		binder.bind(propertyValues);
+		BindingResult bindingResult = binder.getBindingResult();
+		assertThat(bindingResult.getErrorCount()).isEqualTo(1);
+		FieldError fieldError = bindingResult.getFieldError(propertyName);
+		TypeMismatchException exception = fieldError.unwrap(TypeMismatchException.class);
+		assertThat(exception)
+			.hasMessageContaining("for property 'styleDate'")
+			.hasCauseInstanceOf(ConversionFailedException.class).getCause()
+				.hasMessageContaining("for value '99/01/01'")
+				.hasCauseInstanceOf(IllegalArgumentException.class).getCause()
+					.hasMessageContaining("Parse attempt failed for value [99/01/01]")
+					.hasCauseInstanceOf(ParseException.class).getCause()
+						// Unable to parse date time value "99/01/01" using configuration from
+						// @org.springframework.format.annotation.DateTimeFormat(pattern=, style=S-, iso=NONE, fallbackPatterns=[])
+						// We do not check "fallbackPatterns=[]", since the array representation in the toString()
+						// implementation for annotations changed from [] to {} in Java 9. In addition, strings
+						// are enclosed in double quotes beginning with Java 9. Thus, we cannot check directly
+						// for the presence of "style=S-".
+						.hasMessageContainingAll(
+							"Unable to parse date time value \"99/01/01\" using configuration from",
+							"@org.springframework.format.annotation.DateTimeFormat",
+							"style=", "S-", "iso=NONE")
+						.hasCauseInstanceOf(ParseException.class).getCause()
+							.hasMessageStartingWith("Unparseable date: \"99/01/01\"")
+							.hasNoCause();
+	}
+
 	@Test
 	void testBindDateArray() {
 		MutablePropertyValues propertyValues = new MutablePropertyValues();
@@ -330,7 +363,10 @@ public class DateFormattingTests {
 							.hasMessageContainingAll(
 								"Unable to parse date time value \"210302\" using configuration from",
 								"@org.springframework.format.annotation.DateTimeFormat",
-								"yyyy-MM-dd", "M/d/yy", "yyyyMMdd", "yyyy.MM.dd");
+								"yyyy-MM-dd", "M/d/yy", "yyyyMMdd", "yyyy.MM.dd")
+							.hasCauseInstanceOf(ParseException.class).getCause()
+								.hasMessageStartingWith("Unparseable date: \"210302\"")
+								.hasNoCause();
 		}
 	}
 

spring-context/src/test/java/org/springframework/format/datetime/standard/DateTimeFormattingTests.java

@@ -16,6 +16,7 @@
 
 package org.springframework.format.datetime.standard;
 
+import java.time.DateTimeException;
 import java.time.Duration;
 import java.time.Instant;
 import java.time.LocalDate;
@@ -320,6 +321,36 @@ class DateTimeFormattingTests {
 		assertThat(binder.getBindingResult().getFieldValue("isoLocalDate")).isEqualTo("2009-10-31");
 	}
 
+	@Test
+	void isoLocalDateWithInvalidFormat() {
+		MutablePropertyValues propertyValues = new MutablePropertyValues();
+		String propertyName = "isoLocalDate";
+		propertyValues.add(propertyName, "2009-31-10");
+		binder.bind(propertyValues);
+		BindingResult bindingResult = binder.getBindingResult();
+		assertThat(bindingResult.getErrorCount()).isEqualTo(1);
+		FieldError fieldError = bindingResult.getFieldError(propertyName);
+		assertThat(fieldError.unwrap(TypeMismatchException.class))
+			.hasMessageContaining("for property 'isoLocalDate'")
+			.hasCauseInstanceOf(ConversionFailedException.class).getCause()
+				.hasMessageContaining("for value '2009-31-10'")
+				.hasCauseInstanceOf(IllegalArgumentException.class).getCause()
+					.hasMessageContaining("Parse attempt failed for value [2009-31-10]")
+					.hasCauseInstanceOf(DateTimeParseException.class).getCause()
+						// Unable to parse date time value "2009-31-10" using configuration from
+						// @org.springframework.format.annotation.DateTimeFormat(pattern=, style=SS, iso=DATE, fallbackPatterns=[])
+						// We do not check "fallbackPatterns=[]", since the array representation in the toString()
+						// implementation for annotations changed from [] to {} in Java 9.
+						.hasMessageContainingAll(
+							"Unable to parse date time value \"2009-31-10\" using configuration from",
+							"@org.springframework.format.annotation.DateTimeFormat", "iso=DATE")
+						.hasCauseInstanceOf(DateTimeParseException.class).getCause()
+							.hasMessageStartingWith("Text '2009-31-10'")
+							.hasCauseInstanceOf(DateTimeException.class).getCause()
+								.hasMessageContaining("Invalid value for MonthOfYear (valid values 1 - 12): 31")
+								.hasNoCause();
+	}
+
 	@Test
 	void testBindISOTime() {
 		MutablePropertyValues propertyValues = new MutablePropertyValues();
@@ -519,9 +550,12 @@ class DateTimeFormattingTests {
 							.hasMessageContainingAll(
 								"Unable to parse date time value \"210302\" using configuration from",
 								"@org.springframework.format.annotation.DateTimeFormat",
-								"yyyy-MM-dd", "M/d/yy", "yyyyMMdd", "yyyy.MM.dd");
+								"yyyy-MM-dd", "M/d/yy", "yyyyMMdd", "yyyy.MM.dd")
+							.hasCauseInstanceOf(DateTimeParseException.class).getCause()
+								.hasMessageStartingWith("Text '210302'")
+								.hasNoCause();
 		}
-}
+	}
 
 
 	public static class DateTimeBean {

spring-context/src/test/java/org/springframework/scheduling/concurrent/ThreadPoolTaskExecutorTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,21 +16,100 @@
 
 package org.springframework.scheduling.concurrent;
 
+import java.util.concurrent.TimeUnit;
+
+import org.junit.jupiter.api.Test;
+
 import org.springframework.core.task.AsyncListenableTaskExecutor;
 
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+
 /**
  * @author Juergen Hoeller
  * @since 5.0.5
  */
 class ThreadPoolTaskExecutorTests extends AbstractSchedulingTaskExecutorTests {
 
+	private final ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
+
+
 	@Override
 	protected AsyncListenableTaskExecutor buildExecutor() {
-		ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
 		executor.setThreadNamePrefix(this.threadNamePrefix);
 		executor.setMaxPoolSize(1);
 		executor.afterPropertiesSet();
 		return executor;
 	}
 
+
+	@Test
+	void modifyCorePoolSizeWhileRunning() {
+		assertThat(executor.getCorePoolSize()).isEqualTo(1);
+		assertThat(executor.getThreadPoolExecutor().getCorePoolSize()).isEqualTo(1);
+
+		executor.setCorePoolSize(0);
+
+		assertThat(executor.getCorePoolSize()).isEqualTo(0);
+		assertThat(executor.getThreadPoolExecutor().getCorePoolSize()).isEqualTo(0);
+	}
+
+	@Test
+	void modifyCorePoolSizeWithInvalidValueWhileRunning() {
+		assertThat(executor.getCorePoolSize()).isEqualTo(1);
+		assertThat(executor.getThreadPoolExecutor().getCorePoolSize()).isEqualTo(1);
+
+		assertThatThrownBy(() -> executor.setCorePoolSize(-1))
+				.isInstanceOf(IllegalArgumentException.class);
+
+		assertThat(executor.getCorePoolSize()).isEqualTo(1);
+		assertThat(executor.getThreadPoolExecutor().getCorePoolSize()).isEqualTo(1);
+	}
+
+	@Test
+	void modifyMaxPoolSizeWhileRunning() {
+		assertThat(executor.getMaxPoolSize()).isEqualTo(1);
+		assertThat(executor.getThreadPoolExecutor().getMaximumPoolSize()).isEqualTo(1);
+
+		executor.setMaxPoolSize(5);
+
+		assertThat(executor.getMaxPoolSize()).isEqualTo(5);
+		assertThat(executor.getThreadPoolExecutor().getMaximumPoolSize()).isEqualTo(5);
+	}
+
+	@Test
+	void modifyMaxPoolSizeWithInvalidValueWhileRunning() {
+		assertThat(executor.getMaxPoolSize()).isEqualTo(1);
+		assertThat(executor.getThreadPoolExecutor().getMaximumPoolSize()).isEqualTo(1);
+
+		assertThatThrownBy(() -> executor.setMaxPoolSize(0))
+				.isInstanceOf(IllegalArgumentException.class);
+
+		assertThat(executor.getMaxPoolSize()).isEqualTo(1);
+		assertThat(executor.getThreadPoolExecutor().getMaximumPoolSize()).isEqualTo(1);
+	}
+
+	@Test
+	void modifyKeepAliveSecondsWhileRunning() {
+		assertThat(executor.getKeepAliveSeconds()).isEqualTo(60);
+		assertThat(executor.getThreadPoolExecutor().getKeepAliveTime(TimeUnit.SECONDS)).isEqualTo(60);
+
+		executor.setKeepAliveSeconds(10);
+
+		assertThat(executor.getKeepAliveSeconds()).isEqualTo(10);
+		assertThat(executor.getThreadPoolExecutor().getKeepAliveTime(TimeUnit.SECONDS)).isEqualTo(10);
+	}
+
+	@Test
+	void modifyKeepAliveSecondsWithInvalidValueWhileRunning() {
+		assertThat(executor.getKeepAliveSeconds()).isEqualTo(60);
+		assertThat(executor.getThreadPoolExecutor().getKeepAliveTime(TimeUnit.SECONDS)).isEqualTo(60);
+
+		assertThatThrownBy(() -> executor.setKeepAliveSeconds(-10))
+				.isInstanceOf(IllegalArgumentException.class);
+
+		assertThat(executor.getKeepAliveSeconds()).isEqualTo(60);
+		assertThat(executor.getThreadPoolExecutor().getKeepAliveTime(TimeUnit.SECONDS)).isEqualTo(60);
+	}
+
 }

spring-context/src/test/java/org/springframework/scheduling/support/CronExpressionTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -51,6 +51,16 @@ class CronExpressionTests {
 		}
 	};
 
+	@Test
+	public void isValidExpression() {
+		assertThat(CronExpression.isValidExpression(null)).isFalse();
+		assertThat(CronExpression.isValidExpression("")).isFalse();
+		assertThat(CronExpression.isValidExpression("*")).isFalse();
+		assertThat(CronExpression.isValidExpression("* * * * *")).isFalse();
+		assertThat(CronExpression.isValidExpression("* * * * * * *")).isFalse();
+
+		assertThat(CronExpression.isValidExpression("* * * * * *")).isTrue();
+	}
 
 	@Test
 	void matchAll() {
@@ -497,6 +507,29 @@ class CronExpressionTests {
 		assertThat(actual.getDayOfMonth()).isEqualTo(13);
 	}
 
+	@Test
+	public void everyTenDays() {
+		CronExpression cronExpression = CronExpression.parse("0 15 12 */10 1-8 5");
+
+		LocalDateTime last = LocalDateTime.parse("2021-04-30T12:14:59");
+		LocalDateTime expected = LocalDateTime.parse("2021-05-21T12:15");
+		LocalDateTime actual = cronExpression.next(last);
+		assertThat(actual).isNotNull();
+		assertThat(actual).isEqualTo(expected);
+
+		last = actual;
+		expected = LocalDateTime.parse("2021-06-11T12:15");
+		actual = cronExpression.next(last);
+		assertThat(actual).isNotNull();
+		assertThat(actual).isEqualTo(expected);
+
+		last = actual;
+		expected = LocalDateTime.parse("2022-01-21T12:15");
+		actual = cronExpression.next(last);
+		assertThat(actual).isNotNull();
+		assertThat(actual).isEqualTo(expected);
+	}
+
 	@Test
 	void yearly() {
 		CronExpression expression = CronExpression.parse("@yearly");
@@ -1261,6 +1294,46 @@ class CronExpressionTests {
 		assertThat(actual.getDayOfWeek()).isEqualTo(SUNDAY);
 	}
 
+	@Test
+	public void daylightSaving() {
+		CronExpression cronExpression = CronExpression.parse("0 0 9 * * *");
 
+		ZonedDateTime last = ZonedDateTime.parse("2021-03-27T09:00:00+01:00[Europe/Amsterdam]");
+		ZonedDateTime expected = ZonedDateTime.parse("2021-03-28T09:00:00+02:00[Europe/Amsterdam]");
+		ZonedDateTime actual = cronExpression.next(last);
+		assertThat(actual).isNotNull();
+		assertThat(actual).isEqualTo(expected);
+
+		last = ZonedDateTime.parse("2021-10-30T09:00:00+02:00[Europe/Amsterdam]");
+		expected = ZonedDateTime.parse("2021-10-31T09:00:00+01:00[Europe/Amsterdam]");
+		actual = cronExpression.next(last);
+		assertThat(actual).isNotNull();
+		assertThat(actual).isEqualTo(expected);
+
+		cronExpression = CronExpression.parse("0 10 2 * * *");
+
+		last = ZonedDateTime.parse("2013-03-31T01:09:00+01:00[Europe/Amsterdam]");
+		expected = ZonedDateTime.parse("2013-04-01T02:10:00+02:00[Europe/Amsterdam]");
+		actual = cronExpression.next(last);
+		assertThat(actual).isNotNull();
+		assertThat(actual).isEqualTo(expected);
+	}
+
+	@Test
+	public void various() {
+		CronExpression cronExpression = CronExpression.parse("3-57 13-28 17,18 1,15 3-12 6#1");
+		LocalDateTime last =     LocalDateTime.of(2022, 9, 15, 17, 44, 11);
+		LocalDateTime expected = LocalDateTime.of(2022, 10, 1, 17, 13, 3);
+		LocalDateTime actual = cronExpression.next(last);
+		assertThat(actual).isNotNull();
+		assertThat(actual).isEqualTo(expected);
+
+		cronExpression = CronExpression.parse("*/28 56 22 */6 * *");
+		last = LocalDateTime.of(2022, 2, 27, 8, 0, 42);
+		expected = LocalDateTime.of(2022, 3, 1, 22, 56, 0);
+		actual = cronExpression.next(last);
+		assertThat(actual).isNotNull();
+		assertThat(actual).isEqualTo(expected);
+	}
 
 }

spring-context/src/test/java/org/springframework/scheduling/support/CronTriggerTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -57,7 +57,7 @@ class CronTriggerTests {
 
 
 	@ParameterizedCronTriggerTest
-	void testMatchAll(LocalDateTime localDateTime, TimeZone timeZone) {
+	void matchAll(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("* * * * * *", timeZone);
@@ -66,7 +66,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testMatchLastSecond(LocalDateTime localDateTime, TimeZone timeZone) {
+	void matchLastSecond(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("* * * * * *", timeZone);
@@ -76,7 +76,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testMatchSpecificSecond(LocalDateTime localDateTime, TimeZone timeZone) {
+	void matchSpecificSecond(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("10 * * * * *", timeZone);
@@ -86,7 +86,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testIncrementSecondByOne(LocalDateTime localDateTime, TimeZone timeZone) {
+	void incrementSecondByOne(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("11 * * * * *", timeZone);
@@ -98,7 +98,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testIncrementSecondWithPreviousExecutionTooEarly(LocalDateTime localDateTime, TimeZone timeZone) {
+	void incrementSecondWithPreviousExecutionTooEarly(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("11 * * * * *", timeZone);
@@ -111,7 +111,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testIncrementSecondAndRollover(LocalDateTime localDateTime, TimeZone timeZone) {
+	void incrementSecondAndRollover(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("10 * * * * *", timeZone);
@@ -123,7 +123,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testSecondRange(LocalDateTime localDateTime, TimeZone timeZone) {
+	void secondRange(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("10-15 * * * * *", timeZone);
@@ -134,7 +134,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testIncrementMinute(LocalDateTime localDateTime, TimeZone timeZone) {
+	void incrementMinute(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("0 * * * * *", timeZone);
@@ -152,7 +152,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testIncrementMinuteByOne(LocalDateTime localDateTime, TimeZone timeZone) {
+	void incrementMinuteByOne(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("0 11 * * * *", timeZone);
@@ -164,7 +164,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testIncrementMinuteAndRollover(LocalDateTime localDateTime, TimeZone timeZone) {
+	void incrementMinuteAndRollover(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("0 10 * * * *", timeZone);
@@ -177,7 +177,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testIncrementHour(LocalDateTime localDateTime, TimeZone timeZone) {
+	void incrementHour(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("0 0 * * * *", timeZone);
@@ -198,7 +198,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testIncrementHourAndRollover(LocalDateTime localDateTime, TimeZone timeZone) {
+	void incrementHourAndRollover(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("0 0 * * * *", timeZone);
@@ -220,7 +220,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testIncrementDayOfMonth(LocalDateTime localDateTime, TimeZone timeZone) {
+	void incrementDayOfMonth(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("0 0 0 * * *", timeZone);
@@ -236,13 +236,13 @@ class CronTriggerTests {
 		assertThat(this.calendar.get(Calendar.DAY_OF_MONTH)).isEqualTo(2);
 		this.calendar.add(Calendar.DAY_OF_MONTH, 1);
 		TriggerContext context2 = getTriggerContext(localDate);
-		Object actual = localDate = trigger.nextExecutionTime(context2);
+		Object actual = trigger.nextExecutionTime(context2);
 		assertThat(actual).isEqualTo(this.calendar.getTime());
 		assertThat(this.calendar.get(Calendar.DAY_OF_MONTH)).isEqualTo(3);
 	}
 
 	@ParameterizedCronTriggerTest
-	void testIncrementDayOfMonthByOne(LocalDateTime localDateTime, TimeZone timeZone) {
+	void incrementDayOfMonthByOne(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("* * * 10 * *", timeZone);
@@ -257,7 +257,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testIncrementDayOfMonthAndRollover(LocalDateTime localDateTime, TimeZone timeZone) {
+	void incrementDayOfMonthAndRollover(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("* * * 10 * *", timeZone);
@@ -273,7 +273,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testDailyTriggerInShortMonth(LocalDateTime localDateTime, TimeZone timeZone) {
+	void dailyTriggerInShortMonth(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("0 0 0 * * *", timeZone);
@@ -294,7 +294,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testDailyTriggerInLongMonth(LocalDateTime localDateTime, TimeZone timeZone) {
+	void dailyTriggerInLongMonth(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("0 0 0 * * *", timeZone);
@@ -315,7 +315,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testDailyTriggerOnDaylightSavingBoundary(LocalDateTime localDateTime, TimeZone timeZone) {
+	void dailyTriggerOnDaylightSavingBoundary(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("0 0 0 * * *", timeZone);
@@ -336,7 +336,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testIncrementMonth(LocalDateTime localDateTime, TimeZone timeZone) {
+	void incrementMonth(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("0 0 0 1 * *", timeZone);
@@ -357,7 +357,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testIncrementMonthAndRollover(LocalDateTime localDateTime, TimeZone timeZone) {
+	void incrementMonthAndRollover(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("0 0 0 1 * *", timeZone);
@@ -380,7 +380,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testMonthlyTriggerInLongMonth(LocalDateTime localDateTime, TimeZone timeZone) {
+	void monthlyTriggerInLongMonth(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("0 0 0 31 * *", timeZone);
@@ -396,7 +396,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testMonthlyTriggerInShortMonth(LocalDateTime localDateTime, TimeZone timeZone) {
+	void monthlyTriggerInShortMonth(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("0 0 0 1 * *", timeZone);
@@ -413,7 +413,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testIncrementDayOfWeekByOne(LocalDateTime localDateTime, TimeZone timeZone) {
+	void incrementDayOfWeekByOne(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("* * * * * 2", timeZone);
@@ -429,7 +429,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testIncrementDayOfWeekAndRollover(LocalDateTime localDateTime, TimeZone timeZone) {
+	void incrementDayOfWeekAndRollover(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("* * * * * 2", timeZone);
@@ -445,7 +445,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testSpecificMinuteSecond(LocalDateTime localDateTime, TimeZone timeZone) {
+	void specificMinuteSecond(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("55 5 * * * *", timeZone);
@@ -459,12 +459,12 @@ class CronTriggerTests {
 		assertThat(actual1).isEqualTo(this.calendar.getTime());
 		this.calendar.add(Calendar.HOUR, 1);
 		TriggerContext context2 = getTriggerContext(localDate);
-		Object actual = localDate = trigger.nextExecutionTime(context2);
+		Object actual = trigger.nextExecutionTime(context2);
 		assertThat(actual).isEqualTo(this.calendar.getTime());
 	}
 
 	@ParameterizedCronTriggerTest
-	void testSpecificHourSecond(LocalDateTime localDateTime, TimeZone timeZone) {
+	void specificHourSecond(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("55 * 10 * * *", timeZone);
@@ -479,12 +479,12 @@ class CronTriggerTests {
 		assertThat(actual1).isEqualTo(this.calendar.getTime());
 		this.calendar.add(Calendar.MINUTE, 1);
 		TriggerContext context2 = getTriggerContext(localDate);
-		Object actual = localDate = trigger.nextExecutionTime(context2);
+		Object actual = trigger.nextExecutionTime(context2);
 		assertThat(actual).isEqualTo(this.calendar.getTime());
 	}
 
 	@ParameterizedCronTriggerTest
-	void testSpecificMinuteHour(LocalDateTime localDateTime, TimeZone timeZone) {
+	void specificMinuteHour(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("* 5 10 * * *", timeZone);
@@ -500,12 +500,12 @@ class CronTriggerTests {
 		// next trigger is in one second because second is wildcard
 		this.calendar.add(Calendar.SECOND, 1);
 		TriggerContext context2 = getTriggerContext(localDate);
-		Object actual = localDate = trigger.nextExecutionTime(context2);
+		Object actual = trigger.nextExecutionTime(context2);
 		assertThat(actual).isEqualTo(this.calendar.getTime());
 	}
 
 	@ParameterizedCronTriggerTest
-	void testSpecificDayOfMonthSecond(LocalDateTime localDateTime, TimeZone timeZone) {
+	void specificDayOfMonthSecond(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("55 * * 3 * *", timeZone);
@@ -521,12 +521,12 @@ class CronTriggerTests {
 		assertThat(actual1).isEqualTo(this.calendar.getTime());
 		this.calendar.add(Calendar.MINUTE, 1);
 		TriggerContext context2 = getTriggerContext(localDate);
-		Object actual = localDate = trigger.nextExecutionTime(context2);
+		Object actual = trigger.nextExecutionTime(context2);
 		assertThat(actual).isEqualTo(this.calendar.getTime());
 	}
 
 	@ParameterizedCronTriggerTest
-	void testSpecificDate(LocalDateTime localDateTime, TimeZone timeZone) {
+	void specificDate(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("* * * 3 11 *", timeZone);
@@ -543,12 +543,12 @@ class CronTriggerTests {
 		assertThat(actual1).isEqualTo(this.calendar.getTime());
 		this.calendar.add(Calendar.SECOND, 1);
 		TriggerContext context2 = getTriggerContext(localDate);
-		Object actual = localDate = trigger.nextExecutionTime(context2);
+		Object actual = trigger.nextExecutionTime(context2);
 		assertThat(actual).isEqualTo(this.calendar.getTime());
 	}
 
 	@ParameterizedCronTriggerTest
-	void testNonExistentSpecificDate(LocalDateTime localDateTime, TimeZone timeZone) {
+	void nonExistentSpecificDate(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		// TODO: maybe try and detect this as a special case in parser?
@@ -561,7 +561,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testLeapYearSpecificDate(LocalDateTime localDateTime, TimeZone timeZone) {
+	void leapYearSpecificDate(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("0 0 0 29 2 *", timeZone);
@@ -579,12 +579,12 @@ class CronTriggerTests {
 		assertThat(actual1).isEqualTo(this.calendar.getTime());
 		this.calendar.add(Calendar.YEAR, 4);
 		TriggerContext context2 = getTriggerContext(localDate);
-		Object actual = localDate = trigger.nextExecutionTime(context2);
+		Object actual = trigger.nextExecutionTime(context2);
 		assertThat(actual).isEqualTo(this.calendar.getTime());
 	}
 
 	@ParameterizedCronTriggerTest
-	void testWeekDaySequence(LocalDateTime localDateTime, TimeZone timeZone) {
+	void weekDaySequence(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("0 0 7 ? * MON-FRI", timeZone);
@@ -607,12 +607,12 @@ class CronTriggerTests {
 		assertThat(actual1).isEqualTo(this.calendar.getTime());
 		this.calendar.add(Calendar.DAY_OF_MONTH, 1);
 		TriggerContext context3 = getTriggerContext(localDate);
-		Object actual = localDate = trigger.nextExecutionTime(context3);
+		Object actual = trigger.nextExecutionTime(context3);
 		assertThat(actual).isEqualTo(this.calendar.getTime());
 	}
 
 	@ParameterizedCronTriggerTest
-	void testDayOfWeekIndifferent(LocalDateTime localDateTime, TimeZone timeZone) {
+	void dayOfWeekIndifferent(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger1 = new CronTrigger("* * * 2 * *", timeZone);
@@ -621,7 +621,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testSecondIncrementer(LocalDateTime localDateTime, TimeZone timeZone) {
+	void secondIncrementer(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger1 = new CronTrigger("57,59 * * * * *", timeZone);
@@ -630,7 +630,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testSecondIncrementerWithRange(LocalDateTime localDateTime, TimeZone timeZone) {
+	void secondIncrementerWithRange(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger1 = new CronTrigger("1,3,5 * * * * *", timeZone);
@@ -639,7 +639,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testHourIncrementer(LocalDateTime localDateTime, TimeZone timeZone) {
+	void hourIncrementer(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger1 = new CronTrigger("* * 4,8,12,16,20 * * *", timeZone);
@@ -648,7 +648,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testDayNames(LocalDateTime localDateTime, TimeZone timeZone) {
+	void dayNames(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger1 = new CronTrigger("* * * * * 0-6", timeZone);
@@ -657,7 +657,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testSundayIsZero(LocalDateTime localDateTime, TimeZone timeZone) {
+	void sundayIsZero(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger1 = new CronTrigger("* * * * * 0", timeZone);
@@ -666,7 +666,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testSundaySynonym(LocalDateTime localDateTime, TimeZone timeZone) {
+	void sundaySynonym(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger1 = new CronTrigger("* * * * * 0", timeZone);
@@ -675,7 +675,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testMonthNames(LocalDateTime localDateTime, TimeZone timeZone) {
+	void monthNames(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger1 = new CronTrigger("* * * * 1-12 *", timeZone);
@@ -684,7 +684,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testMonthNamesMixedCase(LocalDateTime localDateTime, TimeZone timeZone) {
+	void monthNamesMixedCase(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger1 = new CronTrigger("* * * * 2 *", timeZone);
@@ -693,91 +693,91 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testSecondInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
+	void secondInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		assertThatIllegalArgumentException().isThrownBy(() -> new CronTrigger("77 * * * * *", timeZone));
 	}
 
 	@ParameterizedCronTriggerTest
-	void testSecondRangeInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
+	void secondRangeInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		assertThatIllegalArgumentException().isThrownBy(() -> new CronTrigger("44-77 * * * * *", timeZone));
 	}
 
 	@ParameterizedCronTriggerTest
-	void testMinuteInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
+	void minuteInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		assertThatIllegalArgumentException().isThrownBy(() -> new CronTrigger("* 77 * * * *", timeZone));
 	}
 
 	@ParameterizedCronTriggerTest
-	void testMinuteRangeInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
+	void minuteRangeInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		assertThatIllegalArgumentException().isThrownBy(() -> new CronTrigger("* 44-77 * * * *", timeZone));
 	}
 
 	@ParameterizedCronTriggerTest
-	void testHourInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
+	void hourInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		assertThatIllegalArgumentException().isThrownBy(() -> new CronTrigger("* * 27 * * *", timeZone));
 	}
 
 	@ParameterizedCronTriggerTest
-	void testHourRangeInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
+	void hourRangeInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		assertThatIllegalArgumentException().isThrownBy(() -> new CronTrigger("* * 23-28 * * *", timeZone));
 	}
 
 	@ParameterizedCronTriggerTest
-	void testDayInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
+	void dayInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		assertThatIllegalArgumentException().isThrownBy(() -> new CronTrigger("* * * 45 * *", timeZone));
 	}
 
 	@ParameterizedCronTriggerTest
-	void testDayRangeInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
+	void dayRangeInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		assertThatIllegalArgumentException().isThrownBy(() -> new CronTrigger("* * * 28-45 * *", timeZone));
 	}
 
 	@ParameterizedCronTriggerTest
-	void testMonthInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
+	void monthInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		assertThatIllegalArgumentException().isThrownBy(() -> new CronTrigger("0 0 0 25 13 ?", timeZone));
 	}
 
 	@ParameterizedCronTriggerTest
-	void testMonthInvalidTooSmall(LocalDateTime localDateTime, TimeZone timeZone) {
+	void monthInvalidTooSmall(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		assertThatIllegalArgumentException().isThrownBy(() -> new CronTrigger("0 0 0 25 0 ?", timeZone));
 	}
 
 	@ParameterizedCronTriggerTest
-	void testDayOfMonthInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
+	void dayOfMonthInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		assertThatIllegalArgumentException().isThrownBy(() -> new CronTrigger("0 0 0 32 12 ?", timeZone));
 	}
 
 	@ParameterizedCronTriggerTest
-	void testMonthRangeInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
+	void monthRangeInvalid(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		assertThatIllegalArgumentException().isThrownBy(() -> new CronTrigger("* * * * 11-13 *", timeZone));
 	}
 
 	@ParameterizedCronTriggerTest
-	void testWhitespace(LocalDateTime localDateTime, TimeZone timeZone) {
+	void whitespace(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger1 = new CronTrigger("*  *  * *  1 *", timeZone);
@@ -786,7 +786,7 @@ class CronTriggerTests {
 	}
 
 	@ParameterizedCronTriggerTest
-	void testMonthSequence(LocalDateTime localDateTime, TimeZone timeZone) {
+	void monthSequence(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
 		CronTrigger trigger = new CronTrigger("0 30 23 30 1/3 ?", timeZone);
@@ -808,23 +808,33 @@ class CronTriggerTests {
 		// Next trigger is 3 months latter
 		this.calendar.add(Calendar.MONTH, 3);
 		TriggerContext context3 = getTriggerContext(localDate);
-		Object actual = localDate = trigger.nextExecutionTime(context3);
+		Object actual = trigger.nextExecutionTime(context3);
 		assertThat(actual).isEqualTo(this.calendar.getTime());
 	}
 
 	@ParameterizedCronTriggerTest
-	void testDaylightSavingMissingHour(LocalDateTime localDateTime, TimeZone timeZone) {
+	void daylightSavingMissingHour(LocalDateTime localDateTime, TimeZone timeZone) {
 		setUp(localDateTime, timeZone);
 
-		// This trigger has to be somewhere in between 2am and 3am
+		// This trigger has to be somewhere between 2:00 AM and 3:00 AM, so we
+		// use a cron expression for 2:10 AM every day.
 		CronTrigger trigger = new CronTrigger("0 10 2 * * *", timeZone);
+
+		// 2:00 AM on March 31, 2013: start of Daylight Saving Time for CET in 2013.
+		// Setting up last completion:
+		// - PST: Sun Mar 31 10:09:54 CEST 2013
+		// - CET: Sun Mar 31 01:09:54 CET 2013
 		this.calendar.set(Calendar.DAY_OF_MONTH, 31);
 		this.calendar.set(Calendar.MONTH, Calendar.MARCH);
 		this.calendar.set(Calendar.YEAR, 2013);
 		this.calendar.set(Calendar.HOUR_OF_DAY, 1);
+		this.calendar.set(Calendar.MINUTE, 9);
 		this.calendar.set(Calendar.SECOND, 54);
-		Date localDate = this.calendar.getTime();
-		TriggerContext context1 = getTriggerContext(localDate);
+		Date lastCompletionTime = this.calendar.getTime();
+
+		// Setting up expected next execution time:
+		// - PST: Sun Mar 31 11:10:00 CEST 2013
+		// - CET: Mon Apr 01 02:10:00 CEST 2013
 		if (timeZone.equals(TimeZone.getTimeZone("CET"))) {
 			// Clocks go forward an hour so 2am doesn't exist in CET for this localDateTime
 			this.calendar.add(Calendar.DAY_OF_MONTH, 1);
@@ -832,8 +842,10 @@ class CronTriggerTests {
 		this.calendar.add(Calendar.HOUR_OF_DAY, 1);
 		this.calendar.set(Calendar.MINUTE, 10);
 		this.calendar.set(Calendar.SECOND, 0);
-		Object actual = localDate = trigger.nextExecutionTime(context1);
-		assertThat(actual).isEqualTo(this.calendar.getTime());
+
+		TriggerContext context = getTriggerContext(lastCompletionTime);
+		Object nextExecutionTime = trigger.nextExecutionTime(context);
+		assertThat(nextExecutionTime).isEqualTo(this.calendar.getTime());
 	}
 
 	private static void roundup(Calendar calendar) {

spring-core/kotlin-coroutines/src/main/kotlin/org/springframework/core/CoroutinesUtils.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,10 +17,7 @@
 @file:JvmName("CoroutinesUtils")
 package org.springframework.core
 
-import kotlinx.coroutines.Deferred
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.GlobalScope
-import kotlinx.coroutines.async
+import kotlinx.coroutines.*
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.reactive.awaitSingleOrNull
 import kotlinx.coroutines.reactor.asFlux
@@ -48,6 +45,8 @@ internal fun <T: Any> deferredToMono(source: Deferred<T>) =
  * @author Sebastien Deleuze
  * @since 5.2
  */
+@Suppress("DEPRECATION")
+@OptIn(DelicateCoroutinesApi::class)
 internal fun <T: Any> monoToDeferred(source: Mono<T>) =
 		GlobalScope.async(Dispatchers.Unconfined) { source.awaitSingleOrNull() }
 

spring-core/spring-core.gradle

@@ -8,7 +8,7 @@ apply plugin: "kotlin"
 // cglib itself depends on asm and is therefore further transformed by the ShadowJar task to
 // depend on org.springframework.asm; this avoids including two different copies of asm.
 def cglibVersion = "3.3.0"
-def objenesisVersion = "3.1"
+def objenesisVersion = "3.2"
 
 configurations {
 	cglib
@@ -70,8 +70,8 @@ dependencies {
 
 jar {
 	reproducibleFileOrder = true
-	preserveFileTimestamps = false // maybe not necessary here, but good for reproducibility
-	manifest.attributes["Dependencies"] = "jdk.unsupported" // JBoss modules
+	preserveFileTimestamps = false  // maybe not necessary here, but good for reproducibility
+	manifest.attributes["Dependencies"] = "jdk.unsupported"  // for WildFly (-> Objenesis 3.2)
 
 	// Inline repackaged cglib classes directly into spring-core jar
 	dependsOn cglibRepackJar

spring-core/src/main/java/org/springframework/asm/ClassReader.java

@@ -88,6 +88,9 @@ public class ClassReader {
    */
   static final int EXPAND_ASM_INSNS = 256;
 
+  /** The maximum size of array to allocate. */
+  private static final int MAX_BUFFER_SIZE = 1024 * 1024;
+
   /** The size of the temporary byte array used to read class input streams chunk by chunk. */
   private static final int INPUT_STREAM_DATA_CHUNK_SIZE = 4096;
 
@@ -191,7 +194,7 @@ public class ClassReader {
     this.b = classFileBuffer;
     // Check the class' major_version. This field is after the magic and minor_version fields, which
     // use 4 and 2 bytes respectively.
-    if (checkClassVersion && readShort(classFileOffset + 6) > Opcodes.V17) {
+    if (checkClassVersion && readShort(classFileOffset + 6) > Opcodes.V18) {
       throw new IllegalArgumentException(
           "Unsupported class file major version " + readShort(classFileOffset + 6));
     }
@@ -310,13 +313,19 @@ public class ClassReader {
     if (inputStream == null) {
       throw new IOException("Class not found");
     }
+    int bufferSize = calculateBufferSize(inputStream);
     try (ByteArrayOutputStream outputStream = new ByteArrayOutputStream()) {
-      byte[] data = new byte[INPUT_STREAM_DATA_CHUNK_SIZE];
+      byte[] data = new byte[bufferSize];
       int bytesRead;
-      while ((bytesRead = inputStream.read(data, 0, data.length)) != -1) {
+      int readCount = 0;
+      while ((bytesRead = inputStream.read(data, 0, bufferSize)) != -1) {
         outputStream.write(data, 0, bytesRead);
+        readCount++;
       }
       outputStream.flush();
+      if (readCount == 1) {
+        return data;
+      }
       return outputStream.toByteArray();
     } finally {
       if (close) {
@@ -325,6 +334,20 @@ public class ClassReader {
     }
   }
 
+  private static int calculateBufferSize(final InputStream inputStream) throws IOException {
+    int expectedLength = inputStream.available();
+    /*
+     * Some implementations can return 0 while holding available data
+     * (e.g. new FileInputStream("/proc/a_file"))
+     * Also in some pathological cases a very small number might be returned,
+     * and in this case we use default size
+     */
+    if (expectedLength < 256) {
+      return INPUT_STREAM_DATA_CHUNK_SIZE;
+    }
+    return Math.min(expectedLength, MAX_BUFFER_SIZE);
+  }
+
   // -----------------------------------------------------------------------------------------------
   // Accessors
   // -----------------------------------------------------------------------------------------------
@@ -3456,7 +3479,6 @@ public class ClassReader {
   private int[] readBootstrapMethodsAttribute(final int maxStringLength) {
     char[] charBuffer = new char[maxStringLength];
     int currentAttributeOffset = getFirstAttributeOffset();
-    int[] currentBootstrapMethodOffsets = null;
     for (int i = readUnsignedShort(currentAttributeOffset - 2); i > 0; --i) {
       // Read the attribute_info's attribute_name and attribute_length fields.
       String attributeName = readUTF8(currentAttributeOffset, charBuffer);
@@ -3464,17 +3486,17 @@ public class ClassReader {
       currentAttributeOffset += 6;
       if (Constants.BOOTSTRAP_METHODS.equals(attributeName)) {
         // Read the num_bootstrap_methods field and create an array of this size.
-        currentBootstrapMethodOffsets = new int[readUnsignedShort(currentAttributeOffset)];
+        int[] result = new int[readUnsignedShort(currentAttributeOffset)];
         // Compute and store the offset of each 'bootstrap_methods' array field entry.
         int currentBootstrapMethodOffset = currentAttributeOffset + 2;
-        for (int j = 0; j < currentBootstrapMethodOffsets.length; ++j) {
-          currentBootstrapMethodOffsets[j] = currentBootstrapMethodOffset;
+        for (int j = 0; j < result.length; ++j) {
+          result[j] = currentBootstrapMethodOffset;
           // Skip the bootstrap_method_ref and num_bootstrap_arguments fields (2 bytes each),
           // as well as the bootstrap_arguments array field (of size num_bootstrap_arguments * 2).
           currentBootstrapMethodOffset +=
               4 + readUnsignedShort(currentBootstrapMethodOffset + 2) * 2;
         }
-        return currentBootstrapMethodOffsets;
+        return result;
       }
       currentAttributeOffset += attributeLength;
     }

spring-core/src/main/java/org/springframework/asm/ClassVisitor.java

@@ -30,8 +30,8 @@ package org.springframework.asm;
 /**
  * A visitor to visit a Java class. The methods of this class must be called in the following order:
  * {@code visit} [ {@code visitSource} ] [ {@code visitModule} ][ {@code visitNestHost} ][ {@code
- * visitPermittedSubclass} ][ {@code visitOuterClass} ] ( {@code visitAnnotation} | {@code
- * visitTypeAnnotation} | {@code visitAttribute} )* ( {@code visitNestMember} | {@code
+ * visitOuterClass} ] ( {@code visitAnnotation} | {@code visitTypeAnnotation} | {@code
+ * visitAttribute} )* ( {@code visitNestMember} | [ {@code * visitPermittedSubclass} ] | {@code
  * visitInnerClass} | {@code visitRecordComponent} | {@code visitField} | {@code visitMethod} )*
  * {@code visitEnd}.
  *

spring-core/src/main/java/org/springframework/asm/ClassWriter.java

@@ -79,7 +79,7 @@ public class ClassWriter extends ClassVisitor {
 
   /**
    * The access_flags field of the JVMS ClassFile structure. This field can contain ASM specific
-   * access flags, such as {@link Opcodes#ACC_DEPRECATED} or {}@link Opcodes#ACC_RECORD}, which are
+   * access flags, such as {@link Opcodes#ACC_DEPRECATED} or {@link Opcodes#ACC_RECORD}, which are
    * removed when generating the ClassFile structure.
    */
   private int accessFlags;