1 /* 2 * Copyright (c) 2000, 2017, 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 * @test 26 * @bug 4348213 27 * @build Test pkg.A 28 * @run main Test 29 * @summary Verify that deserialization allows an incoming class descriptor 30 * representing a class in the unnamed package to be resolved to a 31 * local class with the same name in a named package, and vice-versa. 32 */ 33 34 import java.io.*; 35 36 class A implements Serializable { 37 private static final long serialVersionUID = 0L; 38 } 39 40 class TestObjectInputStream extends ObjectInputStream { 41 TestObjectInputStream(InputStream in) throws IOException { super(in); } 42 protected Class resolveClass(ObjectStreamClass desc) 43 throws IOException, ClassNotFoundException 44 { 45 String name = desc.getName(); 46 if (name.equals("A")) { 47 return pkg.A.class; 48 } else if (name.equals("pkg.A")) { 49 return A.class; 50 } else { 51 return super.resolveClass(desc); 52 } 53 } 54 } 55 56 public class Test { 57 public static void main(String[] args) throws Exception { 58 ByteArrayOutputStream bout = new ByteArrayOutputStream(); 59 ObjectOutputStream oout = new ObjectOutputStream(bout); 60 oout.writeObject(new A()); 61 oout.writeObject(new pkg.A()); 62 oout.close(); 63 64 ObjectInputStream oin = new TestObjectInputStream( 65 new ByteArrayInputStream(bout.toByteArray())); 66 oin.readObject(); 67 oin.readObject(); 68 } 69 }