Java tutorial
//package com.java2s; /* * $HeadURL$ * $Revision$ * $Date$ * * ==================================================================== * * 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. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation. For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. * */ import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; public class Main { public static Object clone(final Object obj) throws CloneNotSupportedException { if (obj == null) { return null; } if (obj instanceof Cloneable) { Class<?> clazz = obj.getClass(); Method m; try { m = clazz.getMethod("clone", (Class[]) null); } catch (NoSuchMethodException ex) { throw new NoSuchMethodError(ex.getMessage()); } try { return m.invoke(obj, (Object[]) null); } catch (InvocationTargetException ex) { Throwable cause = ex.getCause(); if (cause instanceof CloneNotSupportedException) { throw ((CloneNotSupportedException) cause); } else { throw new Error("Unexpected exception", cause); } } catch (IllegalAccessException ex) { throw new IllegalAccessError(ex.getMessage()); } } else { throw new CloneNotSupportedException(); } } }