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 8004928
  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.InvocationHandler;
  33 import java.lang.reflect.Method;
  34 import java.lang.reflect.Modifier;
  35 import java.lang.reflect.Proxy;
  36 
  37 public class NonPublicInterface {
  38 
  39     static class Handler implements InvocationHandler, Serializable {
  40         public Object invoke(Object obj, Method meth, Object[] args) {
  41             return null;
  42         }
  43     }
  44 
  45     public static final String nonPublicIntrfaceName = "java.util.zip.ZipConstants";
  46 
  47     public static void main(String[] args) throws Exception {
  48         Class<?> nonPublic = Class.forName(nonPublicIntrfaceName);
  49         if (Modifier.isPublic(nonPublic.getModifiers())) {
  50             throw new Error("Interface " + nonPublicIntrfaceName +
  51                     " is public and need to be changed!");
  52         }
  53 
  54         ByteArrayOutputStream bout = new ByteArrayOutputStream();
  55         ObjectOutputStream oout = new ObjectOutputStream(bout);
  56         oout.writeObject(Proxy.newProxyInstance(nonPublic.getClassLoader(),
  57             new Class<?>[]{ nonPublic }, new Handler()));
  58         oout.close();
  59         ObjectInputStream oin = new ObjectInputStream(
  60             new ByteArrayInputStream(bout.toByteArray()));
  61         oin.readObject();
  62     }
  63 }