|
Java example source code file (WriteReplace.java)
The WriteReplace.java Java example source code/* * Copyright (c) 2000, 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. */ /* @test * @summary Test proper functioning of class-defined writeReplace methods. */ import java.io.*; public class WriteReplace { static class ReplaceMe implements Serializable { private Object obj; private boolean writeReplaceCalled = false; public ReplaceMe(Object obj) { this.obj = obj; } private Object writeReplace() throws ObjectStreamException { if (writeReplaceCalled) { throw new Error("multiple calls to writeReplace"); } writeReplaceCalled = true; return obj; } } public static void main(String[] args) throws Exception { final int nobjs = 10; final int nrounds = 10; Object common = "foo"; ReplaceMe[] objs = new ReplaceMe[nobjs]; for (int i = 0; i < nobjs; i++) { objs[i] = new ReplaceMe(common); } ByteArrayOutputStream bout = new ByteArrayOutputStream(); ObjectOutputStream oout = new ObjectOutputStream(bout); for (int i = 0; i < nrounds; i++) { for (int j = 0; j < nobjs; j++) { oout.writeObject(objs[j]); } } oout.flush(); ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); ObjectInputStream oin = new ObjectInputStream(bin); common = null; for (int i = 0; i < nrounds; i++) { for (int j = 0; j < nobjs; j++) { if (common == null) { common = oin.readObject(); } else { if (oin.readObject() != common) { throw new Error("incorrect replacement object"); } } } } } } Other Java examples (source code examples)Here is a short list of links related to this Java WriteReplace.java source code file: |
... this post is sponsored by my books ... | |
#1 New Release! |
FP Best Seller |
Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.
A percentage of advertising revenue from
pages under the /java/jwarehouse
URI on this website is
paid back to open source projects.