1/* 2 * Copyright (c) 1997, 2007, 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 * @bug 4070080 26 * 27 * @summary Test reading an evolved class serialization into the original class 28 * version. Class evolved by adding a superclass. 29 * 30 * @clean A WriteAddedSuperClass ReadAddedSuperClass ReadAddedSuperClass2 31 * @compile WriteAddedSuperClass.java 32 * @run main WriteAddedSuperClass 33 * @clean A AddedSuperClass 34 * @compile ReadAddedSuperClass.java 35 * @run main ReadAddedSuperClass 36 * @clean A 37 * @compile WriteAddedSuperClass.java 38 * @run main WriteAddedSuperClass 39 * @clean A AddedSuperClass 40 * @compile ReadAddedSuperClass2.java 41 * @run main ReadAddedSuperClass2 42 * 43 */ 44 45 /* 46 * Part a of test serializes an instance of an evolved class to a serialization stream. 47 * Part b of test deserializes the serialization stream into an instance of 48 * the original class. 49 * 50 */ 51 52import java.io.*; 53 54class AddedSuperClass implements Serializable { 55 // Needed at least one field to recreate failure. 56 int field; 57} 58 59class A extends AddedSuperClass implements Serializable { 60 // Version 1.1 of class A. Added superclass NewSerializableSuper. 61 private static final long serialVersionUID = 1L; 62} 63 64public class WriteAddedSuperClass { 65 public static void main(String args[]) throws IOException { 66 A a = new A(); 67 File f = new File("tmp.ser"); 68 ObjectOutput out = 69 new ObjectOutputStream(new FileOutputStream(f)); 70 out.writeObject(a); 71 out.close(); 72 } 73} 74