package javax.annotation; import java.lang.annotation.Documented; import java.lang.annotation.ElementType; import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; import java.lang.annotation.Target; import javax.annotation.meta.When; @Documented @Target({ElementType.METHOD, ElementType.CONSTRUCTOR,ElementType.TYPE,ElementType.PACKAGE}) @Retention(RetentionPolicy.RUNTIME) public @interface CheckReturnValue { When when() default When.ALWAYS; ElementType[] applyTo() default {}; }