1 /* 2 * Copyright (c) 2001, 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 package test.java.util.AbstractMap; 25 26 import java.util.HashMap; 27 import java.util.Hashtable; 28 import java.util.Map; 29 import java.util.Set; 30 import java.util.TreeMap; 31 import java.util.TreeSet; 32 33 /** 34 * @test 35 * @bug 4503672 36 * @summary AbstractMap.equals and AbstractSet.equals are fragile: they 37 * throw exceptions when they should return false. 38 * @author Josh Bloch 39 */ 40 public class Equals { main(String[] args)41 public static void main(String[] args) { 42 Map m = new HashMap(); 43 m.put(null, ""); 44 Map h = new Hashtable(); 45 h.put("", ""); 46 if (m.equals(h)) 47 throw new RuntimeException("1"); 48 49 Map m1 = new TreeMap(); 50 m1.put(new Integer(42), "The Answer"); 51 Map m2 = new TreeMap(); 52 m2.put("The Answer", new Integer(42)); 53 if (m1.equals(m2)) 54 throw new RuntimeException("3"); 55 56 Set s1 = new TreeSet(); 57 s1.add(new Integer(666)); 58 Set s2 = new TreeSet(); 59 s2.add("Great googly moogly!"); 60 if (s1.equals(s2)) 61 throw new RuntimeException("2"); 62 } 63 } 64