Annotation Type MustBeClosed

@Documented
@Target({CONSTRUCTOR,METHOD})
public @interface MustBeClosed

Annotation for constructors of AutoCloseables or methods that return an AutoCloseable and require that the resource is closed.

This is enforced by checking that invocations occur within the resource variable initializer of a try-with-resources statement, which guarantees that the resource is always closed. The analysis may be improved in the future to recognize other patterns where the resource will always be closed.

Note that Android SDK versions prior to 19 do not support try-with-resources, so the annotation should be avoided on APIs that may be used on Android, unless desugaring is used.