1 /*
   2  * Copyright (c) 2000, 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  *
  26  * @clean Write Read A B I Handler
  27  * @compile Write.java Handler.java
  28  * @run main Write
  29  * @clean Write Read A B I Handler
  30  * @compile Read.java Handler.java
  31  * @run main Read
  32  *
  33  * @summary Verify that ObjectInputStream can skip over unresolvable serialized
  34  *          proxy instances.
  35  */
  36 
  37 import java.io.*;
  38 import java.lang.reflect.*;
  39 
  40 interface I {}          // interface present only on writing side
  41 
  42 class A implements Serializable {
  43     private static final long serialVersionUID = 0L;
  44     String a = "a";
  45     Object proxy;
  46     String z = "z";
  47 
  48     A(Object proxy) { this.proxy = proxy; }
  49 }
  50 
  51 class B implements Serializable {
  52     private static final long serialVersionUID = 0L;
  53     String s = "s";
  54     transient Object proxy;
  55 
  56     B(Object proxy) { this.proxy = proxy; }
  57 
  58     private void writeObject(ObjectOutputStream out) throws IOException {
  59         out.defaultWriteObject();
  60         out.writeObject(proxy);
  61     }
  62 }
  63 
  64 public class Write {
  65     public static void main(String[] args) throws Exception {
  66         Object proxy = Proxy.newProxyInstance(
  67             Write.class.getClassLoader(),
  68             new Class[] { I.class }, new Handler());
  69         ObjectOutputStream oout = new ObjectOutputStream(
  70             new FileOutputStream("tmp.ser"));
  71         oout.writeObject(new A(proxy));
  72         oout.reset();
  73         oout.writeObject(new B(proxy));
  74         oout.writeObject(proxy);
  75         oout.close();
  76     }
  77 }