1 /*
2 * Copyright 2001-2014 Stephen Colebourne
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.joda.time;
17
18 /**
19 * A DateTimeZone implementation for UTC.
20 * <p>
21 * This exists instead of using FixedDateTimeZone to avoid deadlocks.
22 * https://github.com/JodaOrg/joda-time/issues/171
23 */
24 final class UTCDateTimeZone extends DateTimeZone {
25
26 static final DateTimeZone INSTANCE = new UTCDateTimeZone();
27 private static final long serialVersionUID = -3513011772763289092L;
28
29 public UTCDateTimeZone() {
30 super("UTC");
31 }
32
33 @Override
34 public String getNameKey(long instant) {
35 return "UTC";
36 }
37
38 @Override
39 public int getOffset(long instant) {
40 return 0;
41 }
42
43 @Override
44 public int getStandardOffset(long instant) {
45 return 0;
46 }
47
48 @Override
49 public int getOffsetFromLocal(long instantLocal) {
50 return 0;
51 }
52
53 @Override
54 public boolean isFixed() {
55 return true;
56 }
57
58 @Override
59 public long nextTransition(long instant) {
60 return instant;
61 }
62
63 @Override
64 public long previousTransition(long instant) {
65 return instant;
66 }
67
68 @Override
69 public java.util.TimeZone toTimeZone() {
70 return new java.util.SimpleTimeZone(0, getID());
71 }
72
73 @Override
74 public boolean equals(Object obj) {
75 return (obj instanceof UTCDateTimeZone);
76 }
77
78 @Override
79 public int hashCode() {
80 return getID().hashCode();
81 }
82
83 }
84