Java tutorial
//package com.java2s; /** * Copyright (c) 2015 nextlets.org * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights to use, * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, * and to permit persons to whom the Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all copies * or substantial portions of the Software. * * The Software shall be used for Good, not Evil. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE * AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ import java.lang.annotation.Annotation; public class Main { public static <A extends Annotation> A getClassAnnotation(Class<?> clientInterface, Class<A> annotationClass) { A annotation = clientInterface.getAnnotation(annotationClass); if (annotation == null) { for (Class<?> parentClass : clientInterface.getInterfaces()) { annotation = getClassAnnotation(parentClass, annotationClass); if (annotation != null) { System.out.println(parentClass); return annotation; } } } return annotation; } }