1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package org.apache.commons.lang3.time; 19 20 import java.util.TimeZone; 21 22 import org.apache.commons.lang3.ObjectUtils; 23 24 /** 25 * Helps to deal with {@link java.util.TimeZone}s. 26 * 27 * @since 3.7 28 */ 29 public class TimeZones { 30 31 /** Do not instantiate. */ TimeZones()32 private TimeZones() { 33 } 34 35 /** 36 * A public version of {@link java.util.TimeZone}'s package private {@code GMT_ID} field. 37 */ 38 public static final String GMT_ID = "GMT"; 39 40 /** 41 * The GMT time zone. 42 * 43 * @since 3.13.0 44 */ 45 public static final TimeZone GMT = TimeZone.getTimeZone(GMT_ID); 46 47 /** 48 * Returns the given TimeZone if non-{@code null}, otherwise {@link TimeZone#getDefault()}. 49 * 50 * @param timeZone a locale or {@code null}. 51 * @return the given locale if non-{@code null}, otherwise {@link TimeZone#getDefault()}. 52 * @since 3.13.0 53 */ toTimeZone(final TimeZone timeZone)54 public static TimeZone toTimeZone(final TimeZone timeZone) { 55 return ObjectUtils.getIfNull(timeZone, TimeZone::getDefault); 56 } 57 58 } 59