/* * Copyright (c) 1997, 1999, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * @bug 4088176 * @build WriteAddedField ReadAddedField * @run main ReadAddedField * * @summary Deserialize an evolved class with a new field, field type is new. * */ import java.io.*; class IncompatibleFieldClass implements Serializable { private static long serialVersionUID = 4L; int x = 5; }; class A implements Serializable { // Version 1.0 of class A. private static final long serialVersionUID = 1L; public int bar; } /** Test serial persistent fields w/o using Alternate API. */ class B implements Serializable { private static final long serialVersionUID = 2L; int bar; B() { bar = 4; } } /** Test serial persistent fields using Alternate API. * Also make sure that optional data to non-existent classes can be skipped. */ class C implements Serializable { private static final long serialVersionUID = 3L; int bar; C() { bar = 4; } private void readObject(ObjectInputStream s) throws IOException, ClassNotFoundException { s.defaultReadObject(); } private void writeObject(ObjectOutputStream s) throws IOException { s.defaultWriteObject(); } } public class ReadAddedField { public static void main(String args[]) throws IOException, ClassNotFoundException { File f = new File("tmp.ser"); ObjectInput in = new ObjectInputStream(new FileInputStream(f)); A a = (A)in.readObject(); if (a.bar != 4) throw new RuntimeException("a.bar does not equal 4, it equals " + a.bar); B b = (B)in.readObject(); if (b.bar != 4) throw new RuntimeException("b.bar does not equal 4, it equals " + b.bar); C c = (C)in.readObject(); if (c.bar != 4) throw new RuntimeException("c.bar does not equal 4, it equals " + c.bar); A aa = (A)in.readObject(); if (aa.bar != 4) throw new RuntimeException("a.bar does not equal 4, it equals " + aa.bar); B bb = (B)in.readObject(); if (bb.bar != 4) throw new RuntimeException("b.bar does not equal 4, it equals " + bb.bar); C cc = (C)in.readObject(); if (cc.bar != 4) throw new RuntimeException("c.bar does not equal 4, it equals " + cc.bar); in.close(); } }