ImplicitToString.java revision 553:9d9f26857129 
1/*
2 * Copyright (c) 1999, 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/**
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
35import java.util.ArrayList;
36
37public 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}
47