author | rriggs |
Fri, 11 Oct 2019 13:11:56 -0400 | |
changeset 58565 | baa5969ecf34 |
parent 47216 | 71c04702a3d5 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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/* @test |
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* @bug 4217737 |
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* @clean NestedReplace A B C D |
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* @build NestedReplace |
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* @run main NestedReplace |
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* @summary Ensure that replacement objects can nominate their own replacements, |
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* so long as the replacement is not the same class as the |
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* just-replaced object. |
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* |
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*/ |
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import java.io.*; |
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class A implements Serializable { |
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private static final long serialVersionUID = 1L; |
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Object writeReplace() throws ObjectStreamException { |
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return new B(); |
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} |
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} |
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class B implements Serializable { |
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private static final long serialVersionUID = 1L; |
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Object writeReplace() throws ObjectStreamException { |
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return new C(); |
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} |
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} |
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class C implements Serializable { |
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private static final long serialVersionUID = 1L; |
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static int writeReplaceCalled = 0; |
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Object writeReplace() throws ObjectStreamException { |
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writeReplaceCalled++; |
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return new C(); |
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} |
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Object readResolve() throws ObjectStreamException { |
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return new D(); |
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} |
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} |
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class D implements Serializable { |
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8231427: Warning cleanup in tests of java.io.Serializable
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private static final long serialVersionUID = 1L; |
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Object readResolve() throws ObjectStreamException { |
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throw new Error("readResolve() called more than once"); |
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} |
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} |
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public class NestedReplace { |
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public static void main(String[] args) throws Exception { |
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ByteArrayOutputStream bout; |
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ObjectOutputStream oout; |
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ByteArrayInputStream bin; |
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ObjectInputStream oin; |
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Object obj; |
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bout = new ByteArrayOutputStream(); |
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oout = new ObjectOutputStream(bout); |
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oout.writeObject(new A()); |
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oout.flush(); |
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bin = new ByteArrayInputStream(bout.toByteArray()); |
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oin = new ObjectInputStream(bin); |
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obj = oin.readObject(); |
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if (! (obj instanceof D)) |
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throw new Error("Deserialized object is of wrong class"); |
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if (C.writeReplaceCalled != 1) |
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throw new Error("C.writeReplace() should only get called once"); |
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} |
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} |