Remove trailing whitespace in source files

find . -type f -name "*.java" -or -name "*.aj" | \
    xargs perl -p -i -e "s/[ \t]*$//g" {} \;

Issue: SPR-10127

spring-context/src/test/java/example/scannable/ServiceInvocationCounter.java

@@ -43,7 +43,7 @@ public class ServiceInvocationCounter {
 		this.threadLocalCount.set(this.useCount);
 		System.out.println("");
 	}
-	
+
 	public int getCount() {
 		return this.useCount;
 	}