mirror of
https://github.com/spring-projects/spring-framework
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Sam Brannen
19 lines
868 B
Plaintext
19 lines
868 B
Plaintext
[[kotlin-classes-interfaces]]
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= Classes and Interfaces
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:page-section-summary-toc: 1
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The Spring Framework supports various Kotlin constructs, such as instantiating Kotlin classes
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through primary constructors, data binding for immutable classes, and optional parameters
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with default values for functions.
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Kotlin parameter names are recognized through a dedicated `KotlinReflectionParameterNameDiscoverer`,
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which allows finding interface method parameter names without requiring the Java `-parameters`
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compiler flag to be enabled during compilation.
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TIP: For completeness, we nevertheless recommend running the Kotlin compiler with its
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`-java-parameters` flag for standard Java parameter exposure.
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You can declare configuration classes as
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{kotlin-docs}/nested-classes.html[top level or nested but not inner],
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since the latter requires a reference to the outer class.
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