Here you can find the source of _getUTCOffset()
private static int _getUTCOffset()
//package com.java2s; /**/*w w w. j a v a 2s.c o m*/ * Copyright (c) 2000-present Liferay, Inc. All rights reserved. * * This library is free software; you can redistribute it and/or modify it under * the terms of the GNU Lesser General Public License as published by the Free * Software Foundation; either version 2.1 of the License, or (at your option) * any later version. * * This library 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 Lesser General Public License for more * details. */ import java.util.TimeZone; public class Main { private static int _getUTCOffset() { TimeZone jiraTimeZone = TimeZone.getTimeZone("America/Los_Angeles"); return jiraTimeZone.getOffset(System.currentTimeMillis()); } }