Here you can find the source of getDefaultTimeZone()
protected static TimeZone getDefaultTimeZone()
//package com.java2s; /**/*from w w w . j a v a 2 s. c om*/ * This code is part of the Harmony System implemented in Work Package 1 * of the Phosphorus project. This work is supported by the European * Comission under the Sixth Framework Programme with contract number * IST-034115. * * Copyright (C) 2006-2009 Phosphorus WP1 partners. Phosphorus Consortium. * http://ist-phosphorus.eu/ * * This 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 software 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. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ import java.util.TimeZone; public class Main { private static TimeZone defaultTimeZone = null; protected static TimeZone getDefaultTimeZone() { if (defaultTimeZone == null) { defaultTimeZone = TimeZone.getDefault(); } return defaultTimeZone; } }