Here you can find the source of getTimeZone()
public static TimeZone getTimeZone()
//package com.java2s; /*/*from w w w .j av a 2 s .c om*/ * Copyright 1997-2016 Unidata Program Center/University Corporation for * Atmospheric Research, P.O. Box 3000, Boulder, CO 80307, * support@unidata.ucar.edu. * * 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. * * You should have received a copy of the GNU Lesser General Public License * along with this library; if not, write to the Free Software Foundation, * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ import java.util.TimeZone; public class Main { /** The default timezone to use for formatting */ private static TimeZone defaultTimeZone; /** _more_ */ public static final TimeZone TIMEZONE_UTC = TimeZone.getTimeZone("UTC"); /** * Get the default timezone used for formatting * * @return timezone */ public static TimeZone getTimeZone() { if (defaultTimeZone == null) { return TIMEZONE_UTC; } return defaultTimeZone; } }