1 /*
2  * Copyright (c) 2004, 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     4973432
27  * @summary Test that toString on entrySet Iterator/Entry behaves reasonably
28  * @author  Josh Bloch
29  */
30 
31 package test.java.util.IdentityHashMap;
32 
33 import java.util.IdentityHashMap;
34 import java.util.Iterator;
35 import java.util.Map;
36 import java.util.Set;
37 
38 public class ToString {
39 
main(String[] args)40     public static void main(String[] args) {
41         Map<String, String> m = new IdentityHashMap<>();
42         Set<Map.Entry<String, String>> es = m.entrySet();
43         m.put("beer", "good");
44         Iterator<Map.Entry<String, String>> i = es.iterator();
45         System.out.println(i); // Used to throw exception
46         i.next();
47         System.out.println(i);
48     }
49 }
50