/*

 * Copyright 2000 Sun Microsystems, Inc.  All Rights Reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

/*

 * @bug 4311991

 * @summary Test ObjectOutputStream.writeUnshared/readUnshared functionality.

 */

import java.io.*;

class Bar implements Serializable {

    private static final long serialVersionUID = 0L;

    private static final ObjectStreamField[] serialPersistentFields =

        new ObjectStreamField[] {

            new ObjectStreamField("obj", Object.class, true)

        };

    Object obj;

    Bar(Object obj) {

        this.obj = obj;

    }

}

public class Read {

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

        String str = "foo";

        ByteArrayOutputStream bout = new ByteArrayOutputStream();

        ObjectOutputStream oout = new ObjectOutputStream(bout);

        oout.writeObject(str);

        oout.writeObject(str);

        oout.close();

        byte[] buf = bout.toByteArray();

        ByteArrayInputStream bin = new ByteArrayInputStream(buf);

        ObjectInputStream oin = new ObjectInputStream(bin);

        oin.readUnshared();

        try {

            oin.readObject();

            throw new Error();

        } catch (ObjectStreamException ex) {

        }

        bin = new ByteArrayInputStream(buf);

        oin = new ObjectInputStream(bin);

        oin.readUnshared();

        try {

            oin.readUnshared();

            throw new Error();

        } catch (ObjectStreamException ex) {

        }

        bin = new ByteArrayInputStream(buf);

        oin = new ObjectInputStream(bin);

        oin.readObject();

        try {

            oin.readUnshared();

            throw new Error();

        } catch (ObjectStreamException ex) {

        }

        // read in objects written by Write.main()

        oin = new ObjectInputStream(new FileInputStream("tmp.ser"));

        oin.readObject();

        try {

            oin.readObject();

            throw new Error();

        } catch (ObjectStreamException ex) {

        }

        oin = new ObjectInputStream(new FileInputStream("tmp.ser"));

        oin.readObject();

        try {

            oin.readUnshared();

            throw new Error();

        } catch (ObjectStreamException ex) {

        }

    }

}