/* * Copyright (c) 2000, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * @bug 4363844 * @summary Verify that a custom readObjectNoData method, if defined properly * by a serializable superclass, gets invoked during deserialization * of a subclass instance whose serialized form omits a class * descriptor corresponding to the superclass. */ import java.io.*; /* Non-serializable superclass which defines readObjectNoData: * readObjectNoData should not get called. */ class A { private static final long serialVersionUID = 0L; boolean aCalled = false; private void readObjectNoData() throws ObjectStreamException { aCalled = true; } } /* Serializable superclass which defines readObjectNoData with wrong signature: * readObjectNoData should not get called. */ class B extends A implements Serializable { private static final long serialVersionUID = 0L; boolean bCalled = false; private void readObjectNoData(int wrong) throws ObjectStreamException { bCalled = true; } } /* Serializable superclass which defines readObjectNoData correctly, and is not * listed in stream: readObjectNoData should get called. */ class C extends B { private static final long serialVersionUID = 0L; boolean cCalled = false; private void readObjectNoData() throws ObjectStreamException { cCalled = true; } } /* Serializable superclass which defines readObjectNoData correctly, but whose * corresponding class descriptor is listed in stream: readObjectNoData should * not get called. */ class D extends C { private static final long serialVersionUID = 0L; boolean dCalled = false; private void readObjectNoData() throws ObjectStreamException { dCalled = true; } } /* Serializable superclass which defines readObjectNoData with wrong access: * readObjectNoData should not get called. */ class E extends D { private static final long serialVersionUID = 0L; boolean eCalled = false; void readObjectNoData() throws ObjectStreamException { eCalled = true; } } /* Instance class. */ class F extends E { private static final long serialVersionUID = 0L; } public class Read { public static void main(String[] args) throws Exception { FileInputStream in = new FileInputStream("tmp.ser"); try { ObjectInputStream oin = new ObjectInputStream(in); F f = (F) oin.readObject(); if (f.aCalled || f.bCalled || f.dCalled || f.eCalled) { throw new Error("readObjectNoData invoked erroneously"); } if (! f.cCalled) { throw new Error("readObjectNoData not invoked"); } } finally { in.close(); } } }