Java tutorial
//package com.java2s; /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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.ArrayList; import java.util.List; public class Main { /** * <p>Gets a {@code List} of superclasses for the given class.</p> * * @param cls the class to look up, may be {@code null} * @return the {@code List} of superclasses in order going up from this one * {@code null} if null input */ public static List<Class<?>> getAllSuperclasses(Class<?> cls) { if (cls == null) { return null; } List<Class<?>> classes = new ArrayList<Class<?>>(); Class<?> superclass = cls.getSuperclass(); while (superclass != null) { classes.add(superclass); superclass = superclass.getSuperclass(); } return classes; } }