1 /*
2  * Copyright (c) 2016, 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 import java.util.ArrayList;
25 import java.util.List;
26 import java.util.TimeZone;
27 import java.util.concurrent.Callable;
28 import java.util.concurrent.ExecutionException;
29 import java.util.concurrent.ExecutorService;
30 import java.util.concurrent.Executors;
31 import java.util.concurrent.Future;
32 
33 public class Bug8066652 {
34 
main(String args[])35     public static void main(String args[]) {
36         ExecutorService executor = Executors.newFixedThreadPool(10);
37         Callable<TimeZone> calTimeZone = () -> TimeZone.getDefault();
38         List<Callable<TimeZone>> tasks = new ArrayList<>();
39         for (int j = 1; j < 10; j++) {
40             tasks.add(calTimeZone);
41         }
42         try {
43             List<Future<TimeZone>> results = executor.invokeAll(tasks);
44             for (Future<TimeZone> f : results) {
45                 TimeZone tz = f.get();
46                 if (! tz.getID().equals("GMT")) {
47                     throw new RuntimeException("wrong Time zone ID: " + tz.getID()
48                             + ", It should be GMT");
49                 }
50             }
51         } catch (InterruptedException | ExecutionException e) {
52             throw new RuntimeException("Execution interrupted or Execution Exception occurred", e);
53         } finally {
54             executor.shutdown();
55         }
56     }
57 }
58