/*

 * Copyright (c) 2001, 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

 * @bug     4503672

 * @summary AbstractMap.equals and AbstractSet.equals are fragile: they

 *          throw exceptions when they should return false.

 * @author  Josh Bloch

 */

public class Equals {

    public static void main(String[] args) {

        Map m = new HashMap();

        m.put(null, "");

        Map h = new Hashtable();

        h.put("", "");

        if (m.equals(h))

            throw new RuntimeException("1");

        Map m1 = new TreeMap();

        m1.put(new Integer(42), "The Answer");

        Map m2 = new TreeMap();

        m2.put("The Answer", new Integer(42));

        if (m1.equals(m2))

            throw new RuntimeException("3");

        Set s1 = new TreeSet();

        s1.add(new Integer(666));

        Set s2 = new TreeSet();

        s2.add("Great googly moogly!");

        if (s1.equals(s2))

            throw new RuntimeException("2");

    }

}