Java Date Convert convertToClientTime(Date serverDate, Integer clientTimezoneOffset)

Description

convert To Client Time

License

Open Source License

Declaration

public static Date convertToClientTime(Date serverDate, Integer clientTimezoneOffset) 

Method Source Code

//package com.java2s;
/**/*  w ww.j  a  v a2s.  c  om*/
 * Copyright (C) 2003-2007 eXo Platform SAS.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version.
 *
 * 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, see<http://www.gnu.org/licenses/>.
 */

import java.util.Calendar;

import java.util.Date;

public class Main {
    public static Date convertToClientTime(Date serverDate, Integer clientTimezoneOffset) {
        if (clientTimezoneOffset == null || clientTimezoneOffset == getServerTimezoneOffset())
            return serverDate;
        Long gmtTime = serverDate.getTime() + getServerTimezoneOffset() * (60 * 1000);
        gmtTime -= clientTimezoneOffset * (60 * 1000);
        return new Date(gmtTime);
    }

    public static Integer getServerTimezoneOffset() {
        Calendar cal = Calendar.getInstance();
        Integer tz = -(cal.get(Calendar.ZONE_OFFSET) + cal.get(Calendar.DST_OFFSET)) / (60 * 1000);
        return tz;
    }
}

Related

1. convertsDateToGMTTimezone(Date date)
2. convertSistemDependentDateToDesiredTimeZone(final Date sistemDependentDate, TimeZone desiredTimeZone)
3. convertStringToDate(String date)
4. convertStringToDate(String date)
5. convertStringToDate(String string)
6. convertToDate(String source)
7. convertToDateStamp(long time)
8. convertToDateTime(String source)
9. convertToStartOfDay(Date date)