Java Date Parse convertUTCDateToLocal(String sDate, TimeZone timezone)

Description

Convert the given date following this roles:

if the given timezone isn't null, the date is localizated with the timezone and then reformatted in yyyyMMdd'T'HHmmss'Z'.
the returned string is always in this format yyyyMMdd'T'HHmmss'Z'
if the given timezone is null the date is not changed

License

Open Source License

Parameter

Parameter	Description
sDate	the given string date to convert
timezone	TimeZone

Exception

Parameter	Description
Exception	an exception

Return

String

Declaration

public static String convertUTCDateToLocal(String sDate, TimeZone timezone) throws Exception

Method Source Code

//package com.java2s;
/*/*from  w  w  w  . j  av  a 2s  .  com*/
 * Funambol is a mobile platform developed by Funambol, Inc.
 * Copyright (C) 2005 - 2007 Funambol, Inc.
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License version 3 as published by
 * the Free Software Foundation with the addition of the following permission
 * added to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED
 * WORK IN WHICH THE COPYRIGHT IS OWNED BY FUNAMBOL, FUNAMBOL DISCLAIMS THE
 * WARRANTY OF NON INFRINGEMENT  OF THIRD PARTY RIGHTS.
 *
 * 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 Affero General Public License
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301 USA.
 *
 * You can contact Funambol, Inc. headquarters at 643 Bair Island Road, Suite
 * 305, Redwood City, CA 94063, USA, or at email address info@funambol.com.
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License version 3.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License
 * version 3, these Appropriate Legal Notices must retain the display of the
 * "Powered by Funambol" logo. If the display of the logo is not reasonably
 * feasible for technical reasons, the Appropriate Legal Notices must display
 * the words "Powered by Funambol".
 */

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.TimeZone;

public class Main {
    public final static String PATTERN_YYYYMMDD = "yyyyMMdd";
    public final static int PATTERN_YYYYMMDD_LENGTH = 8;
    public final static String PATTERN_YYYY_MM_DD = "yyyy-MM-dd";
    public final static int PATTERN_YYYY_MM_DD_LENGTH = 10;
    public final static String PATTERN_UTC = "yyyyMMdd'T'HHmmss'Z'";
    public final static int PATTERN_UTC_LENGTH = 16;
    public final static String PATTERN_UTC_WOZ = "yyyyMMdd'T'HHmmss";
    public final static int PATTERN_UTC_WOZ_LENGTH = 15;
    public final static String PATTERN_UTC_WSEP = "yyyy-MM-dd'T'HH:mm:ss'Z'";
    public final static int PATTERN_UTC_WSEP_LENGTH = 20;
    public final static String PATTERN_LOCALTIME = "dd/MM/yyyy HH:mm:ss";
    public final static int PATTERN_LOCALTIME_LENGTH = 19;
    public final static String PATTERN_LOCALTIME_WOT = "dd/MM/yyyy";
    public final static int PATTERN_LOCALTIME_WOT_LENGTH = 10;
    public final static String PATTERN_YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";
    public final static int PATTERN_YYYY_MM_DD_HH_MM_SS_LENGTH = 19;
    public final static TimeZone TIMEZONE_UTC = TimeZone.getTimeZone("UTC");

    /**
     * Convert the given date following this roles:
     * <ul>
     * <li>if the given timezone isn't null,
     * the date is localizated with the timezone and then reformatted in
     * <code>yyyyMMdd'T'HHmmss'Z'</code>.</li>
     * <li>the returned string is always in this format <code>yyyyMMdd'T'HHmmss'Z'</code></li>
     * <li>if the given timezone is null the date is not changed</li>
     * </ul>
     * @param sDate the given string date to convert
     * @param timezone TimeZone
     * @return String
     * @throws Exception
     */
    public static String convertUTCDateToLocal(String sDate, TimeZone timezone) throws Exception {

        if (sDate == null || sDate.equals("") || isInAllDayFormat(sDate)) {
            return sDate;
        }

        if (timezone == null) {
            return sDate;
        }

        if (!sDate.endsWith("Z")) {
            return sDate;
        }

        DateFormat utcFormatter = new SimpleDateFormat(PATTERN_UTC);
        utcFormatter.setTimeZone(TIMEZONE_UTC);

        Date date = null;
        date = utcFormatter.parse(sDate);

        DateFormat utcFormatterWOZ = new SimpleDateFormat(PATTERN_UTC_WOZ);
        utcFormatterWOZ.setTimeZone(timezone);

        return utcFormatterWOZ.format(date);
    }

    /**
     * Check if the date is into format yyyyMMdd or yyyy-MM-dd.
     * If the date is in one of this format then the event is an AllDay event
     *
     * @param date The date to check (Usually this is the start date event)
     * @return boolean true if the format is right, otherwise false
     */
    public static boolean isInAllDayFormat(String date) {
        String pattern = getDateFormat(date);

        if (pattern == null) {
            return false;
        }

        if (pattern.equals(PATTERN_YYYYMMDD) || pattern.equals(PATTERN_YYYY_MM_DD)) {
            return true;
        }
        return false;
    }

    /**
     * Get the date pattern
     *
     * @param date the date to get the format
     * @return String the pattern
     */
    public static String getDateFormat(String date) {

        if (date == null || date.equals("")) {
            return null;
        }

        SimpleDateFormat dateFormat = new SimpleDateFormat();
        String[] patterns = new String[] { PATTERN_UTC, PATTERN_UTC_WOZ, PATTERN_UTC_WSEP, PATTERN_YYYY_MM_DD,
                PATTERN_YYYYMMDD, PATTERN_LOCALTIME, PATTERN_LOCALTIME_WOT, PATTERN_YYYY_MM_DD_HH_MM_SS };

        int[] patternsLength = new int[] { PATTERN_UTC_LENGTH, PATTERN_UTC_WOZ_LENGTH, PATTERN_UTC_WSEP_LENGTH,
                PATTERN_YYYY_MM_DD_LENGTH, PATTERN_YYYYMMDD_LENGTH, PATTERN_LOCALTIME_LENGTH,
                PATTERN_LOCALTIME_WOT_LENGTH, PATTERN_YYYY_MM_DD_HH_MM_SS_LENGTH };

        int s = patterns.length; // and also patternsLength.length
        Date d = null;
        for (int i = 0; i < s; i++) {
            try {
                dateFormat.applyPattern(patterns[i]);
                dateFormat.setLenient(true);
                d = dateFormat.parse(date);

                if (date.length() == patternsLength[i]) {
                    return patterns[i];
                }

            } catch (ParseException e) {
                continue;
            }
        }
        return null;
    }
}

Java Date Parse convertUTCDateToLocal(String sDate, TimeZone timezone)

Description

License

Parameter

Exception

Return

Declaration

Method Source Code

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