parse Date for list of possible formats : Date « Date Type « Android

parse Date for list of possible formats

 * Copyright (C) 2007-2010 Michael Novak <>, Josh Guilfoyle <>
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2, 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
 * General Public License for more details.
 * Code lifted from Informa <>.
//package org.androidnerds.reader.util;

import android.util.Log;

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

class DateUtils {
  private static final String TAG = "DateUtils";
  private static final SimpleDateFormat[] dateFormats;
  private static final int defaultFormat = 2;
  private DateUtils() { }
  static {
    final String[] possibleFormats = {
      "EEE, dd MMM yyyy HH:mm:ss z", // RFC_822
        "EEE, dd MMM yyyy HH:mm zzzz",
        "yyyy-MM-dd'T'HH:mm:ss.SSSzzzz", // Blogger Atom feed has millisecs also
        "yyyy-MM-dd'T'HH:mm:ss z",
        "yyyy-MM-dd'T'HH:mm:ssz", // ISO_8601
    dateFormats = new SimpleDateFormat[possibleFormats.length];
      TimeZone gmtTZ = TimeZone.getTimeZone("GMT");

      for (int i = 0; i < possibleFormats.length; i++)
        /* TODO: Support other locales? */
        dateFormats[i] = new SimpleDateFormat(possibleFormats[i],

  public static Date parseDate(String str) {
    Date result = null;
    str = str.trim();
    if (str.length() > 10) {
      // TODO deal with +4:00 (no zero before hour)
      if ((str.substring(str.length() - 5).indexOf("+") == 0 || str
          .substring(str.length() - 5).indexOf("-") == 0)
          && str.substring(str.length() - 5).indexOf(":") == 2) {

        String sign = str.substring(str.length() - 5,
            str.length() - 4);

        str = str.substring(0, str.length() - 5) + sign + "0"
        + str.substring(str.length() - 4);
        // logger.debug("CASE1 : new date " + strdate + " ? "
        //    + strdate.substring(0, strdate.length() - 5));


      String dateEnd = str.substring(str.length() - 6);

      // try to deal with -05:00 or +02:00 at end of date
      // replace with -0500 or +0200
      if ((dateEnd.indexOf("-") == 0 || dateEnd.indexOf("+") == 0)
          && dateEnd.indexOf(":") == 3) {
        // TODO deal with GMT-00:03
        if ("GMT".equals(str.substring(str.length() - 9, str
            .length() - 6))) {
          Log.d(TAG, "General time zone with offset, no change");
        } else {
          // continue treatment
          String oldDate = str;
          String newEnd = dateEnd.substring(0, 3) + dateEnd.substring(4);
          str = oldDate.substring(0, oldDate.length() - 6) + newEnd;
          // logger.debug("!!modifying string ->"+strdate);
    int i = 0;
    while (i < dateFormats.length) {
      try {
        result = dateFormats[i].parse(str);
        // logger.debug("******Parsing Success "+strdate+"->"+result+" with
        // "+dateFormats[i].toPattern());
      } catch (java.text.ParseException eA) {

    return result;
   * Format a date in a manner that would be most suitable for serialized
   * storage.
   * @param date
   *   {@link Date} object to format.
   * @return
   *   Robust, formatted date string.
  public static String formatDate(Date date) {
    return dateFormats[defaultFormat].format(date);


Related examples in the same category

1.Write Date to AudioTrack
2.Represents a date using an integer, in a similar fashion to the implementation in Microsoft Excel.
3.A formatter that formats dates to show the elapsed time relative to some base date.
4.Iso Date
5.Get the string of the date using format "yyyy-MM-dd HH:mm:ss"
6.Parse a string that contains date, return a date object using format "yyyy-MM-dd HH:mm:ss"
7.Create Date from timestamp
8.Convert date in RFC2822 and UTC strings, and to build Date from string of dates in RFC2822 and UTC format
9.Gets a "HH:mm:ss.SSS EEE dd MMM yyyy" representation of a Date
10.Gets a "yyyy MMM dd, HH:mm:ss.SSS" representation of a Date
11.Gets a "EEE, dd MMM yyyy hh:mm:ss 'GMT'" representation of a Date
12.Parses a String for a "EEE, dd MMM yyyy hh:mm:ss 'GMT'" formatted Date
13.Formatting and parsing the various date formats we expect to encounter.
14.ISO8601, ISO8601, RFC822 Date format
15.Easter Date
16.Parse Date Two dates with Day value Two dates with Second value
19.Get start of a date
20.Get start date of a Month
21.Get start date of a year
22.Create date from year, month and day value
23.Create Date from year, month, day, hour, minute, second
24.Get year value from Date
25.Get Month value from Date
26.Get Day value from Date
27.Get now in Date and Millis-seconds
28.Add day, Month and year to a Date
29.Parse date in format of yyyyMMddHHmmss or yyyyMMdd
30.String to Date
31.Convert date value in long to YYYYMMDDHHMMSS format
32.Convert Date to Number
33.Get short and long date String
34.Convert Java Date To Xml Time
35.Convert dates to Julian dates.
36.Parse an RFC 822 date string.
37.Format a date into a format suitable for SQLite
38.Dot String to Date
39.Parses an RFC822 formatted date string.
40.Formats a Date according to RFC822.
41.DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT).format(date);
42.yyyy-MM-dd HH:mm:ss date format
43.Utility class for formatting and parsing the various date formats we expect to encounter.
44.Get a string representation of a date as it relates to the current time.
45.get Date String from milliseconds
46.Generate a ISO 8601 date
47.Generate a Calendar from ISO 8601 date To String
49.Get date string for Locale tr
50.RFC3339 Date
51.Date formats Date Format day-of-week Short
53.Get end of each day
54.Get the end of each Month
55.Get end of a year
56.calculate Month Distance
57.calculate Day Distance
58.The month, and just the month, is zero-based. Add 1 for display.
59.Get hour different
60.format Millis Into Human Readable