| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.harmony.luni.internal.util; |
| |
| /** |
| * This class provides a way to add an implementation specific way to |
| * access the current timezone. |
| */ |
| public abstract class TimezoneGetter { |
| |
| private static TimezoneGetter instance; |
| |
| /** |
| * Retrieves the singleton instance of this class. |
| * |
| * @return TimezoneGetter the single instance of this class. |
| */ |
| public static TimezoneGetter getInstance() { |
| return instance; |
| } |
| |
| /** |
| * Sets the singleton instance of this class. |
| * |
| * @param instance |
| * TimezoneGetter the single instance of this class. |
| */ |
| public static void setInstance(TimezoneGetter getter) { |
| if (instance != null) { |
| throw new UnsupportedOperationException("TimezoneGetter instance already set"); |
| } |
| instance = getter; |
| } |
| |
| /** |
| * Retrieves the ID of the current time zone. |
| * |
| * @return String the ID of the current time zone. |
| */ |
| public abstract String getId(); |
| } |