| /* |
| * Copyright (c) 2004, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 5097350 |
| * @summary Make sure that TimeZone.getTimeZone returns a clone of a cached TimeZone instance. |
| */ |
| |
| import java.util.*; |
| import java.text.*; |
| |
| public class Bug5097350 { |
| public static void main(String[] args) { |
| String[] tzids = TimeZone.getAvailableIDs(); |
| List<String> ids = new ArrayList<>(tzids.length + 10); |
| ids.addAll(Arrays.asList(tzids)); |
| // add some custom ids |
| ids.add("GMT+1"); |
| ids.add("GMT-7:00"); |
| ids.add("GMT+10:20"); |
| ids.add("GMT-00:00"); |
| ids.add("GMT+00:00"); |
| |
| for (String id : ids) { |
| test(id); |
| } |
| } |
| |
| private static void test(String id) { |
| TimeZone tz1 = TimeZone.getTimeZone(id); |
| int offset1 = tz1.getRawOffset(); |
| tz1.setRawOffset(offset1 + 13 * 60 * 60 * 1000); |
| |
| TimeZone tz2 = TimeZone.getTimeZone(id); |
| if (tz1 == tz2) { |
| throw new RuntimeException("TimeZones are identical: " + id); |
| } |
| if (offset1 != tz2.getRawOffset()) { |
| throw new RuntimeException("Offset changed through aliasing: " + id); |
| } |
| } |
| } |