Annotation Interface NonNullApi

@Target(PACKAGE) @Retention(RUNTIME) @Documented @Nonnull @TypeQualifierDefault({METHOD,PARAMETER}) public @interface NonNullApi
A common Spring annotation to declare that parameters and return values are to be considered as non-nullable by default for a given package.

Leverages JSR-305 meta-annotations to indicate nullability in Java to common tools with JSR-305 support and used by Kotlin to infer nullability of Spring API.

Should be used at the package level in association with Nullable annotations at the parameter and return value level.

Sebastien Deleuze, Juergen Hoeller
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