Java tutorial
//package com.java2s; /* * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.util.Set; public class Main { static void findAllInterfaces(Class c, Set<Class> interfaces) { if (c.isInterface()) { interfaces.add(c); } Class s = c.getSuperclass(); if (s != null) { findAllInterfaces(s, interfaces); } Class[] is = c.getInterfaces(); for (int i = 0; i < is.length; i++) { findAllInterfaces(is[i], interfaces); } } }