1 /*

     2  * Copyright 2001 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  */

    23 

    24 /*

    25  * @test

    26  * @bug 4486049

    27  * @summary toString method fails if size changes in between a call to size

    28  *           and an attempt to iterate.

    29  * @author Josh Bloch

    30  */

    31 

    32 import java.util.*;

    33 

    34 public class ToString {

    35     public static void main(String[] args) {

    36         Map m = new LyingMap();

    37         if (!m.toString().equals("{}"))

    38             throw new RuntimeException(m.toString() + "!= {}");

    39 

    40         m.put("x", "1");

    41         if (!m.toString().equals("{x=1}"))

    42             throw new RuntimeException(m.toString() + "!= {x=1}");

    43 

    44         m.put("y", "2");

    45         if (!m.toString().equals("{x=1, y=2}"))

    46             throw new RuntimeException(m.toString() + "!= {x=1, y=2}");

    47     }

    48 }

    49 

    50 class LyingMap extends LinkedHashMap {

    51     public int size() {

    52         return super.size() + 1; // Lies, lies, all lies!

    53     }

    54 }