package Annotation; import java.lang.reflect.Method; @User(name="Xiaoming") public class DefaultUser { @UserMethod(defaultName = "12") public void say(){ System.out.println("DefaultUser.say"); } public static void main(String[] args) throws NoSuchMethodException{ User u = DefaultUser.class.getAnnotation(User.class); System.out.println(u.name()+ u.id()); Method say = new DefaultUser().getClass().getMethod("say"); UserMethod method= say.getAnnotation(UserMethod.class); System.out.println(method.defaultName()); } }