Here you can find the source of guessTimeZone(String timezoneOffset)
public static TimeZone guessTimeZone(String timezoneOffset)
//package com.java2s; /* // ww w.j a v a2s . c o m * ============================================================= * Copyright (C) 2007-2011 Edgenius (http://www.edgenius.com) * ============================================================= * License Information: http://www.edgenius.com/licensing/edgenius/2.0/ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2.0 * as published by the Free Software Foundation. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * http://www.gnu.org/licenses/gpl.txt * * **************************************************************** */ import java.util.HashMap; import java.util.Map; import java.util.TimeZone; public class Main { private static final Map<String, TimeZone> offsetMap = new HashMap<String, TimeZone>(); public static TimeZone guessTimeZone(String timezoneOffset) { return offsetMap.get(timezoneOffset.trim()); } }