Java Date UTC Parse parseDateAsUTC(String dateString)

Description

Attempt to parse the given string of form: yyyy-MM-dd[THH:mm:ss[.SSS][Z]] as a Date.

License

fedora commons license

Parameter

Parameter	Description
dateString	the date string to parse

Return

Date the date, if parse was successful; null otherwise

Declaration

public static Date parseDateAsUTC(String dateString) 

Method Source Code

//package com.java2s;
/* The contents of this file are subject to the license and copyright terms
 * detailed in the license directory at the root of the source tree (also
 * available online at http://fedora-commons.org/license/).
 *//*from w w w. ja v a 2  s  .com*/

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;

public class Main {
    /**
     * Attempt to parse the given string of form: yyyy-MM-dd[THH:mm:ss[.SSS][Z]]
     * as a Date. If the string is not of that form, return null.
     *
     * @param dateString
     *        the date string to parse
     * @return Date the date, if parse was successful; null otherwise
     */
    public static Date parseDateAsUTC(String dateString) {
        if (dateString == null || dateString.length() == 0) {
            return null;
        }

        SimpleDateFormat formatter = new SimpleDateFormat();
        formatter.setTimeZone(TimeZone.getTimeZone("UTC"));
        int length = dateString.length();
        if (dateString.startsWith("-")) {
            length--;
        }
        if (dateString.endsWith("Z")) {
            if (length == 11) {
                formatter.applyPattern("yyyy-MM-dd'Z'");
            } else if (length == 20) {
                formatter.applyPattern("yyyy-MM-dd'T'HH:mm:ss'Z'");
            } else if (length == 22) {
                formatter.applyPattern("yyyy-MM-dd'T'HH:mm:ss.S'Z'");
            } else if (length == 23) {
                formatter.applyPattern("yyyy-MM-dd'T'HH:mm:ss.SS'Z'");
            } else if (length == 24) {
                formatter.applyPattern("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
            }
        } else {
            if (length == 10) {
                formatter.applyPattern("yyyy-MM-dd");
            } else if (length == 19) {
                formatter.applyPattern("yyyy-MM-dd'T'HH:mm:ss");
            } else if (length == 21) {
                formatter.applyPattern("yyyy-MM-dd'T'HH:mm:ss.S");
            } else if (length == 22) {
                formatter.applyPattern("yyyy-MM-dd'T'HH:mm:ss.SS");
            } else if (length == 23) {
                formatter.applyPattern("yyyy-MM-dd'T'HH:mm:ss.SSS");
            } else if (dateString.endsWith("GMT") || dateString.endsWith("UTC")) {
                formatter.applyPattern("EEE, dd MMMM yyyyy HH:mm:ss z");
            }
        }
        try {
            return formatter.parse(dateString);
        } catch (ParseException e) {
            return null;
        }
    }
}

Related

1. getUtcDate(Date date)
2. getUtcDate(final int year, final int month, final int day)
3. getUTCDate(int year, int month, int date, int h, int m, int s, int milli)
4. getUTCDate(int year, int month, int day)
5. getUTCMidnightZero(Date d)
6. parsePartialUTCToDate(String utcDate)
7. parseToUTCDate(String timestamp, String pattern)
8. parseUTCDateToString(Date date)
9. parseUTCToDate(String utcDate)