2 * Copyright (C) 2008 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 package org.apache.harmony.luni.internal.util;
20 * This class provides a way to add an implementation specific way to
21 * access the current timezone.
23 public abstract class TimezoneGetter {
25 private static TimezoneGetter instance;
28 * Retrieves the singleton instance of this class.
30 * @return TimezoneGetter the single instance of this class.
32 public static TimezoneGetter getInstance() {
37 * Sets the singleton instance of this class.
40 * TimezoneGetter the single instance of this class.
42 public static void setInstance(TimezoneGetter getter) {
43 if (instance != null) {
44 throw new UnsupportedOperationException("TimezoneGetter instance already set");
50 * Retrieves the ID of the current time zone.
52 * @return String the ID of the current time zone.
54 public abstract String getId();