1 /*

     2  * Copyright 1999 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 4244408

    27  * @summary toString() should be called implicitly when += is used.

    28  *

    29  * @run main ImplicitToString

    30  */

    31 

    32 

    33 // The failure for this test is a ClassCastException when the code is run.

    34 

    35 import java.util.ArrayList;

    36 

    37 public class ImplicitToString {

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

    39         String s = "";

    40         ArrayList al = new ArrayList();

    41         al.add(new Object());

    42 

    43         // In the following line, toString() should be implicitly called.

    44         s += al.get(0);

    45     }

    46 }