1/* 2 * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* 25 * @test 26 * @bug 4646747 27 * @summary Tests that persistence delegate is correct after memory stress 28 * @author Mark Davidson 29 * @run main/othervm -ms16m -mx16m Test4646747 30 */ 31 32import java.beans.DefaultPersistenceDelegate; 33import java.beans.PersistenceDelegate; 34import java.beans.XMLEncoder; 35 36/** 37 * This bug was introduced in 1.4 FCS but was working in 1.4.beta3 38 */ 39public class Test4646747 { 40 public static void main(String[] args) { 41 XMLEncoder encoder = new XMLEncoder(System.out); 42 encoder.setPersistenceDelegate(Test4646747.class, new MyPersistenceDelegate()); 43 // WARNING: This can eat up a lot of memory 44 Object[] obs = new Object[10000]; 45 while (obs != null) { 46 try { 47 obs = new Object[obs.length + obs.length / 3]; 48 } 49 catch (OutOfMemoryError error) { 50 obs = null; 51 } 52 } 53 PersistenceDelegate pd = encoder.getPersistenceDelegate(Test4646747.class); 54 if (!(pd instanceof MyPersistenceDelegate)) 55 throw new Error("persistence delegate has been lost"); 56 } 57 58 private static class MyPersistenceDelegate extends DefaultPersistenceDelegate { 59 } 60} 61