org.springframework.lang

Annotation Type Nullable

@Target(value={METHOD,PARAMETER,TYPE_PARAMETER,FIELD})
 @Retention(value=RUNTIME)
 @Documented
public @interface Nullable

A common Spring annotation to declare that the annotated parameter, return value or field could be null under some circumstances.

Should be used at parameters, return values and optionally field level in association with NonNullApi package-level annotations. Methods overrides should repeat parent parameter or return value @Nullable annotations unless they behave differently.

Leverages JSR-305 meta-annotations to indicate its semantics to common tools with JSR-305 support.

Since:

5.0

Author:

Sebastien Deleuze, Juergen Hoeller

See Also:

NonNullApi, javax.annotation.Nullable