1package javax.annotation; 2 3import java.lang.annotation.Documented; 4import java.lang.annotation.Retention; 5import java.lang.annotation.RetentionPolicy; 6 7import javax.annotation.meta.TypeQualifier; 8import javax.annotation.meta.When; 9 10@Documented 11@TypeQualifier 12@Retention(RetentionPolicy.RUNTIME) 13public @interface PropertyKey { 14 When when() default When.ALWAYS; 15} 16