NestedReplace.java revision 0
0N/A/*
2362N/A * Copyright 1999 Sun Microsystems, Inc. All Rights Reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
0N/A * published by the Free Software Foundation.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
2362N/A * CA 95054 USA or visit www.sun.com if you need additional information or
2362N/A * have any questions.
0N/A */
0N/A
0N/A/* @test
0N/A * @bug 4217737
0N/A * @clean NestedReplace A B C D
0N/A * @build NestedReplace
0N/A * @run main NestedReplace
0N/A * @summary Ensure that replacement objects can nominate their own replacements,
0N/A * so long as the replacement is not the same class as the
0N/A * just-replaced object.
0N/A *
0N/A */
0N/A
0N/Aimport java.io.*;
0N/A
0N/Aclass A implements Serializable {
0N/A Object writeReplace() throws ObjectStreamException {
0N/A return new B();
0N/A }
0N/A}
0N/A
0N/Aclass B implements Serializable {
0N/A Object writeReplace() throws ObjectStreamException {
0N/A return new C();
0N/A }
0N/A}
0N/A
0N/Aclass C implements Serializable {
0N/A
0N/A static int writeReplaceCalled = 0;
0N/A
0N/A Object writeReplace() throws ObjectStreamException {
0N/A writeReplaceCalled++;
0N/A return new C();
0N/A }
0N/A
0N/A Object readResolve() throws ObjectStreamException {
0N/A return new D();
0N/A }
0N/A}
0N/A
0N/Aclass D implements Serializable {
0N/A Object readResolve() throws ObjectStreamException {
0N/A throw new Error("readResolve() called more than once");
0N/A }
0N/A}
0N/A
0N/Apublic class NestedReplace {
0N/A public static void main(String[] args) throws Exception {
ByteArrayOutputStream bout;
ObjectOutputStream oout;
ByteArrayInputStream bin;
ObjectInputStream oin;
Object obj;
bout = new ByteArrayOutputStream();
oout = new ObjectOutputStream(bout);
oout.writeObject(new A());
oout.flush();
bin = new ByteArrayInputStream(bout.toByteArray());
oin = new ObjectInputStream(bin);
obj = oin.readObject();
if (! (obj instanceof D))
throw new Error("Deserialized object is of wrong class");
if (C.writeReplaceCalled != 1)
throw new Error("C.writeReplace() should only get called once");
}
}