util/HashMap/KeySetRemove.java

/*
 * Copyright (c) 1999, 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 4286765
 * @summary HashMap and TreeMap entrySet().remove(k) spuriously returned
 *          false if the Map previously mapped k to null.
 */

import java.util.*;

public class KeySetRemove {
    public static void main(String args[]) throws Exception {
        Map m[] = {new HashMap(), new TreeMap()};
        for (int i=0; i<m.length; i++) {
            m[i].put("bananas", null);
            if (!m[i].keySet().remove("bananas"))
                throw new Exception("Yes, we have no bananas: "+i);
        }
    }
}
Revision:	1.2
Committed:	Sun Sep 5 21:32:19 2010 UTC (13 years, 8 months ago) by jsr166
Branch:	MAIN
CVS Tags:	release-1_7_0
Changes since 1.1:	+4 -4 lines
Log Message:	Update legal notices to Oracle wording
#	User	Rev	Content
1	jsr166	1.1	/*
2	jsr166	1.2	* Copyright (c) 1999, Oracle and/or its affiliates. All rights reserved.
3	jsr166	1.1	* 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	jsr166	1.2	* 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	jsr166	1.1	*/
23
24			/**
25			* @test
26			* @bug 4286765
27			* @summary HashMap and TreeMap entrySet().remove(k) spuriously returned
28			* false if the Map previously mapped k to null.
29			*/
30
31			import java.util.*;
32
33			public class KeySetRemove {
34			public static void main(String args[]) throws Exception {
35			Map m[] = {new HashMap(), new TreeMap()};
36			for (int i=0; i<m.length; i++) {
37			m[i].put("bananas", null);
38			if (!m[i].keySet().remove("bananas"))
39			throw new Exception("Yes, we have no bananas: "+i);
40			}
41			}
42			}