1 /*
   2  * Copyright (c) 2000, 2010, 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 /*
  25  * @summary Verify that ObjectInputStream can skip over unresolvable serialized
  26  *          proxy instances.
  27  */
  28 
  29 import java.io.*;
  30 import java.lang.reflect.*;
  31 
  32 class A implements Serializable {
  33     private static final long serialVersionUID = 0L;
  34     String a;
  35     String z;
  36 }
  37 
  38 class B implements Serializable {
  39     private static final long serialVersionUID = 0L;
  40     String s;
  41 
  42     private void readObject(ObjectInputStream in)
  43         throws IOException, ClassNotFoundException
  44     {
  45         in.defaultReadObject();
  46         // leave proxy object unconsumed
  47     }
  48 }
  49 
  50 public class Read {
  51     public static void main(String[] args) throws Exception {
  52         FileInputStream in = new FileInputStream("tmp.ser");
  53         try {
  54             ObjectInputStream oin = new ObjectInputStream(in);
  55             A a = (A) oin.readObject();
  56             if (! (a.a.equals("a") && a.z.equals("z"))) {
  57                 throw new Error("A fields corrupted");
  58             }
  59             B b = (B) oin.readObject();
  60             if (! b.s.equals("s")) {
  61                 throw new Error("B fields corrupted");
  62             }
  63             try {
  64                 oin.readObject();
  65                 throw new Error("proxy read should not succeed");
  66             } catch (ClassNotFoundException ex) {
  67             }
  68         } finally {
  69             in.close();
  70         }
  71     }
  72 }