1 /*
   2  * Copyright (c) 2002, 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  * @bug 4337857
  26  * @summary Verify that custom serialization methods declared with incorrect
  27  *          return types are not invoked.
  28  */
  29 
  30 import java.io.*;
  31 
  32 class A implements Serializable {
  33     private static final long serialVersionUID = 0L;
  34 
  35     static boolean readObjectNoDataCalled;
  36 
  37     private Object readObjectNoData() throws ObjectStreamException {
  38         readObjectNoDataCalled = true;
  39         return null;
  40     }
  41 }
  42 
  43 class B extends A {
  44     private static final long serialVersionUID = 0L;
  45 
  46     static boolean readObjectCalled;
  47     static boolean readResolveCalled;
  48 
  49     private Integer readObject(ObjectInputStream in)
  50         throws IOException, ClassNotFoundException
  51     {
  52         readObjectCalled = true;
  53         in.defaultReadObject();
  54         return null;
  55     }
  56 
  57     private B readResolve() throws ObjectStreamException {
  58         readResolveCalled = true;
  59         return this;
  60     }
  61 }
  62 
  63 public class Read {
  64     public static void main(String[] args) throws Exception {
  65         FileInputStream in = new FileInputStream("tmp.ser");
  66         try {
  67             ObjectInputStream oin = new ObjectInputStream(in);
  68             B b = (B) oin.readObject();
  69             if (A.readObjectNoDataCalled) {
  70                 throw new Error("readObjectNoData with wrong return type called");
  71             } else if (B.readObjectCalled) {
  72                 throw new Error("readObject with wrong return type called");
  73             } else if (B.readResolveCalled) {
  74                 throw new Error("readResolve with wrong return type called");
  75             }
  76         } finally {
  77             in.close();
  78         }
  79     }
  80 }