1 /* 2 * Copyright (c) 2010, 2011, 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 * Portions Copyright (c) 2010, 2011 IBM Corporation 26 */ 27 28 /* 29 * @test 30 * @bug 6927486 31 * @summary A serialized Hashtable can be de-serialized properly. 32 * @author Neil Richards <neil.richards@ngmr.net>, <neil_richards@uk.ibm.com> 33 */ 34 35 import java.io.ByteArrayInputStream; 36 import java.io.ByteArrayOutputStream; 37 import java.io.ObjectInputStream; 38 import java.io.ObjectOutputStream; 39 import java.io.PrintWriter; 40 import java.io.StringWriter; 41 import java.util.Hashtable; 42 import java.util.Map; 43 44 public class SimpleSerialization { 45 public static void main(final String[] args) throws Exception { 46 Hashtable<String, String> h1 = new Hashtable<>(); 47 48 System.err.println("*** BEGIN TEST ***"); 49 50 h1.put("key", "value"); 51 52 final ByteArrayOutputStream baos = new ByteArrayOutputStream(); 53 try (ObjectOutputStream oos = new ObjectOutputStream(baos)) { 54 oos.writeObject(h1); 55 } 56 57 final byte[] data = baos.toByteArray(); 58 final ByteArrayInputStream bais = new ByteArrayInputStream(data); 59 final Object deserializedObject; 60 try (ObjectInputStream ois = new ObjectInputStream(bais)) { 61 deserializedObject = ois.readObject(); 62 } 63 64 if(!h1.getClass().isInstance(deserializedObject)) { 65 throw new RuntimeException("Result not assignable to type of h1"); 66 } 67 68 if (false == h1.equals(deserializedObject)) { 69 Hashtable<String, String> d1 = (Hashtable<String, String>) h1; 70 for(Map.Entry entry: h1.entrySet()) { 71 System.err.println("h1.key::" + entry.getKey() + " d1.containsKey()::" + d1.containsKey((String) entry.getKey())); 72 System.err.println("h1.value::" + entry.getValue() + " d1.contains()::" + d1.contains(entry.getValue())); 73 System.err.println("h1.value == d1.value " + entry.getValue().equals(d1.get((String) entry.getKey()))); 74 } 75 76 throw new RuntimeException(getFailureText(h1, deserializedObject)); 77 } 78 } 79 80 private static String getFailureText(final Object orig, final Object copy) { 81 final StringWriter sw = new StringWriter(); 82 try (PrintWriter pw = new PrintWriter(sw)) { 83 pw.println("Test FAILED: Deserialized object is not equal to the original object"); 84 pw.print("\tOriginal: "); 85 printObject(pw, orig).println(); 86 pw.print("\tCopy: "); 87 printObject(pw, copy).println(); 88 } 89 return sw.toString(); 90 } 91 92 private static PrintWriter printObject(final PrintWriter pw, final Object o) { 93 pw.printf("%s@%08x", o.getClass().getName(), System.identityHashCode(o)); 94 return pw; 95 } 96 }