1 /*
   2  * Copyright (c) 2001, 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 4413817
  26  * @summary Verify that ObjectInputStream.resolveProxyClass can properly
  27  *          resolve a dynamic proxy class which implements a non-public
  28  *          interface not defined in the latest user defined class loader.
  29  */
  30 
  31 import java.io.*;
  32 import java.lang.reflect.*;
  33 
  34 public class NonPublicInterface {
  35 
  36     static class Handler implements InvocationHandler, Serializable {
  37         public Object invoke(Object obj, Method meth, Object[] args) {
  38             return null;
  39         }
  40     }
  41 
  42     public static void main(String[] args) throws Exception {
  43         Class nonPublic = null;
  44         String[] nonPublicInterfaces = new String[] {
  45             "java.awt.Conditional",
  46             "java.util.zip.ZipConstants",
  47             "javax.swing.GraphicsWrapper",
  48             "javax.swing.JPopupMenu$Popup",
  49             "javax.swing.JTable$Resizable2",
  50             "javax.swing.JTable$Resizable3",
  51             "javax.swing.ToolTipManager$Popup",
  52             "sun.audio.Format",
  53             "sun.audio.HaePlayable",
  54             "sun.tools.agent.StepConstants",
  55         };
  56         for (int i = 0; i < nonPublicInterfaces.length; i++) {
  57             try {
  58                 nonPublic = Class.forName(nonPublicInterfaces[i]);
  59                 break;
  60             } catch (ClassNotFoundException ex) {
  61             }
  62         }
  63         if (nonPublic == null) {
  64             throw new Error("couldn't find system non-public interface");
  65         }
  66 
  67         ByteArrayOutputStream bout = new ByteArrayOutputStream();
  68         ObjectOutputStream oout = new ObjectOutputStream(bout);
  69         oout.writeObject(Proxy.newProxyInstance(nonPublic.getClassLoader(),
  70             new Class[]{ nonPublic }, new Handler()));
  71         oout.close();
  72         ObjectInputStream oin = new ObjectInputStream(
  73             new ByteArrayInputStream(bout.toByteArray()));
  74         oin.readObject();
  75     }
  76 }