1/* 2 * Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* @test 25 * @summary Ensure that serialization invokes writeReplace/readResolve methods 26 * on dynamic proxies, just as with normal objects. 27 */ 28 29import java.io.*; 30import java.lang.reflect.*; 31 32public class Test implements InvocationHandler, Serializable { 33 34 static ClassLoader loader = Test.class.getClassLoader(); 35 36 public Object invoke(Object proxy, Method method, Object[] args) 37 throws Throwable 38 { 39 String methName = method.getName(); 40 if (methName.equals("writeReplace")) { 41 return Proxy.newProxyInstance( 42 loader, new Class[] { ReadResolve.class }, this); 43 } else if (methName.equals("readResolve")) { 44 return Proxy.newProxyInstance( 45 loader, new Class[] { Resolved.class }, this); 46 } else if (method.getDeclaringClass() == Object.class) { 47 return method.invoke(this, args); 48 } else { 49 throw new Error(); 50 } 51 } 52 53 public static void main(String[] args) throws Exception { 54 ByteArrayOutputStream bout = new ByteArrayOutputStream(); 55 ObjectOutputStream oout = new ObjectOutputStream(bout); 56 oout.writeObject(Proxy.newProxyInstance( 57 loader, new Class[] { WriteReplace.class }, new Test())); 58 oout.close(); 59 ObjectInputStream oin = new ObjectInputStream( 60 new ByteArrayInputStream(bout.toByteArray())); 61 if (!(oin.readObject() instanceof Resolved)) { 62 throw new Error(); 63 } 64 } 65} 66