1 /*

     2  * Copyright (c) 2003, 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 4838379

    26  * @summary Verify that custom serialization methods defined by enum types are

    27  *          not invoked during serialization or deserialization.

    28  */

    29 

    30 import java.io.*;

    31 

    32 enum Foo {

    33 

    34     foo,

    35     bar {

    36         private void writeObject(ObjectOutputStream out) throws IOException {

    37             throw new Error("bar.writeObject invoked");

    38         }

    39         private void readObject(ObjectInputStream in)

    40             throws IOException, ClassNotFoundException

    41         {

    42             throw new Error("bar.readObject invoked");

    43         }

    44         Object writeReplace() throws ObjectStreamException {

    45             throw new Error("bar.writeReplace invoked");

    46         }

    47         // readResolve cannot be defined until Enum.readResolve is removed

    48         // Object readResolve() throws ObjectStreamException {

    49         //    throw new Error("bar.readResolve invoked");

    50         // }

    51     };

    52 

    53     private void writeObject(ObjectOutputStream out) throws IOException {

    54         throw new Error("Foo.writeObject invoked");

    55     }

    56     private void readObject(ObjectInputStream in)

    57         throws IOException, ClassNotFoundException

    58     {

    59         throw new Error("Foo.readObject invoked");

    60     }

    61     Object writeReplace() throws ObjectStreamException {

    62         throw new Error("Foo.writeReplace invoked");

    63     }

    64     // readResolve cannot be defined until Enum.readResolve is removed

    65     // Object readResolve() throws ObjectStreamException {

    66     //    throw new Error("Foo.readResolve invoked");

    67     // }

    68 }

    69 

    70 public class Test {

    71     public static void main(String[] args) throws Exception {

    72         ByteArrayOutputStream bout = new ByteArrayOutputStream();

    73         ObjectOutputStream oout = new ObjectOutputStream(bout);

    74         for (Foo f : Foo.values()) {

    75             oout.writeObject(f);

    76         }

    77         oout.close();

    78         ObjectInputStream oin = new ObjectInputStream(

    79             new ByteArrayInputStream(bout.toByteArray()));

    80         for (Foo f : Foo.values()) {

    81             Object obj = oin.readObject();

    82             if (obj != f) {

    83                 throw new Error("expected " + f + ", got " + obj);

    84             }

    85         }

    86     }

    87 }