1/* 2 * Copyright (c) 1999, 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 4216997 27 * @summary Cloning a subclass of LinkedList results in an object that isn't 28 * an instance of the subclass. The same applies to TreeSet and 29 * TreeMap. 30 */ 31 32import java.util.*; 33 34public class Clone { 35 public static void main(String[] args) { 36 LinkedList2 l = new LinkedList2(); 37 LinkedList2 lClone = (LinkedList2) l.clone(); 38 if (!(l.equals(lClone) && lClone.equals(l))) 39 throw new RuntimeException("LinkedList.clone() is broken 1."); 40 l.add("a"); 41 lClone = (LinkedList2) l.clone(); 42 if (!(l.equals(lClone) && lClone.equals(l))) 43 throw new RuntimeException("LinkedList.clone() is broken 2."); 44 l.add("b"); 45 lClone = (LinkedList2) l.clone(); 46 if (!(l.equals(lClone) && lClone.equals(l))) 47 throw new RuntimeException("LinkedList.clone() is broken 2."); 48 49 50 TreeSet2 s = new TreeSet2(); 51 TreeSet2 sClone = (TreeSet2) s.clone(); 52 if (!(s.equals(sClone) && sClone.equals(s))) 53 throw new RuntimeException("TreeSet.clone() is broken."); 54 s.add("a"); 55 sClone = (TreeSet2) s.clone(); 56 if (!(s.equals(sClone) && sClone.equals(s))) 57 throw new RuntimeException("TreeSet.clone() is broken."); 58 s.add("b"); 59 sClone = (TreeSet2) s.clone(); 60 if (!(s.equals(sClone) && sClone.equals(s))) 61 throw new RuntimeException("TreeSet.clone() is broken."); 62 63 TreeMap2 m = new TreeMap2(); 64 TreeMap2 mClone = (TreeMap2) m.clone(); 65 if (!(m.equals(mClone) && mClone.equals(m))) 66 throw new RuntimeException("TreeMap.clone() is broken."); 67 m.put("a", "b"); 68 mClone = (TreeMap2) m.clone(); 69 if (!(m.equals(mClone) && mClone.equals(m))) 70 throw new RuntimeException("TreeMap.clone() is broken."); 71 m.put("c", "d"); 72 mClone = (TreeMap2) m.clone(); 73 if (!(m.equals(mClone) && mClone.equals(m))) 74 throw new RuntimeException("TreeMap.clone() is broken."); 75 } 76 77 private static class LinkedList2 extends LinkedList {} 78 private static class TreeSet2 extends TreeSet {} 79 private static class TreeMap2 extends TreeMap {} 80} 81