Java Parse Date parseDate(final String date)

Description

parse Date

License

Open Source License

Declaration

public static Date parseDate(final String date)

Method Source Code

//package com.java2s;
/*//w  ww  . ja v  a  2 s .c om
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* 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 Lesser General Public License for more details.
*
* Copyright (c) 2008 - 2009 Pentaho Corporation and Contributors.  All rights reserved.
*/

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

import java.util.Date;

public class Main {
    private static final String[] DATEFORMATS = new String[] { "yyyy-MM-dd'T'hh:mm:ss.SSS z",
            "yyyy-MM-dd'T'hh:mm:ss z", "yyyy-MM-dd'T'hh:mm:ss.SSS'Z'", "yyyy-MM-dd'T'hh:mm:ss'Z'",
            "yyyy-MM-dd'T'hh:mm:ss.SSS", "yyyy-MM-dd'T'hh:mm:ss", "yyyy-MM-dd zzz", "yyyy-MM-dd'Z'", "yyyy-MM-dd" };
    private static final long SECONDS = 1000;
    private static final long MINUTES = 60 * SECONDS;
    private static final long HOURS = 60 * MINUTES;

    public static Date parseDate(final String date) {
        if (date.startsWith("PT")) {
            return parseDuration(date);
        }
        final SimpleDateFormat dateFormat = new SimpleDateFormat();
        dateFormat.setLenient(false);
        for (int i = 0; i < DATEFORMATS.length; i++) {
            try {
                final String dateformat = DATEFORMATS[i];
                dateFormat.applyPattern(dateformat);
                return dateFormat.parse(date);
            } catch (ParseException e) {
                // ignore
            }
        }
        return null;
    }

    public static Date parseDuration(final String duration) {
        if (duration.startsWith("PT") == false) {
            return null;
        }

        double div = 1;
        long date = 0;
        int item = 0;
        final char[] chars = duration.toCharArray();
        for (int i = 1; i < chars.length; i++) {
            final char c = chars[i];

            if (c == 'T') {
                item = 0;
                div = 1;
                continue;
            }
            if (Character.isDigit(c)) {
                div *= 10;
                item = item * 10 + ((int) c - '0');
            } else if (c == 'H') {
                date += item * HOURS;
                item = 0;
                div = 1;
            } else if (c == 'M') {
                date += item * MINUTES;
                item = 0;
                div = 1;
            } else if (c == 'S') {
                date += item * SECONDS;
                item = 0;
                div = 1;
            } else if (c == '.') {
                div = 1;
            } else {
                return null;
            }
        }
        date += (item / div) * 1000;
        return new Date(date);
    }
}

Java Parse Date parseDate(final String date)

Description

License

Declaration

Method Source Code

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