Java Date from String getDateFromPattern(String pattern)

Description

get Date From Pattern

License

Apache License

Parameter

Parameter	Description
pattern	a parameter

Declaration

public static Date getDateFromPattern(String pattern) 

Method Source Code

//package com.java2s;
/*//from  w  ww  .  j a  v a  2s. c  om
 * Copyright 2007 David Vicente
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.Calendar;
import java.util.Date;

public class Main {
    private static final int PATTERN_MINUS_SUBSTR_LENGTH = 5;
    private static final int PATTERN_PLUS_SUBSTR_LENGTH = 4;
    private static final int DELTA_NEXT_WEEK = 7;
    private static final int DELTA_PREVIOUS_WEEK = -DELTA_NEXT_WEEK;
    private static final int MILLISECOND_END_OF_DAY = 999;
    private static final int SECOND_END_OF_DAY = 59;
    private static final int MINUTE_END_OF_DAY = 59;
    private static final int HOUR_END_OF_DAY = 23;
    public static final String NOW = "Now";
    public static final String STARTOF_TODAY = "Startof_today";
    public static final String ENDOF_TODAY = "Endof_today";
    public static final String STARTOF_TOMORROW = "Startof_tomorrow";
    public static final String ENDOF_TOMORROW = "Endof_tomorrow";
    public static final String STARTOF_YESTERDAY = "Startof_yesterday";
    public static final String ENDOF_YESTERDAY = "Endof_yesterday";
    public static final String STARTOF_THISWEEK = "Startof_thisweek";
    public static final String ENDOF_THISWEEK = "Endof_thisweek";
    public static final String STARTOF_NEXTWEEK = "Startof_nextweek";
    public static final String ENDOF_NEXTWEEK = "Endof_nextweek";
    public static final String STARTOF_LASTWEEK = "Startof_lastweek";
    public static final String ENDOF_LASTWEEK = "Endof_lastweek";
    public static final String STARTOF_THISMONTH = "Startof_thismonth";
    public static final String ENDOF_THISMONTH = "Endof_thismonth";
    public static final String STARTOF_LASTMONTH = "Startof_lastmonth";
    public static final String ENDOF_LASTMONTH = "Endof_lastmonth";
    public static final String STARTOF_NEXTMONTH = "Startof_nextmonth";
    public static final String ENDOF_NEXTMONTH = "Endof_nextmonth";
    public static final String STARTOF_THISYEAR = "Startof_thisyear";
    public static final String ENDOF_THISYEAR = "Endof_thisyear";
    public static final String STARTOF_LASTYEAR = "Startof_lastyear";
    public static final String ENDOF_LASTYEAR = "Endof_lastyear";
    public static final String STARTOF_NEXTYEAR = "Startof_nextyear";
    public static final String ENDOF_NEXTYEAR = "Endof_nextyear";
    /**
     * Plus[0-9]{1,3}
     */
    public static final String PATTERN_PLUS = "Plus";
    /**
     * Minus[0-9]{1,3}
     */
    public static final String PATTERN_MINUS = "Minus";

    /**
     *
     * @param pattern
     * @return
     */
    public static Date getDateFromPattern(String pattern) {
        return getDateFromPattern(pattern,
                new Date(System.currentTimeMillis()));
    }

    /**
     *
     * @param pattern
     * @param currentDate
     * @return
     */
    public static Date getDateFromPattern(String pattern, Date currentDate) {

        Date returnDate = null;
        if (pattern != null && pattern.length() > 0) {
            Calendar cal = Calendar.getInstance();
            cal.setFirstDayOfWeek(Calendar.MONDAY);
            cal.setTime(currentDate);

            if (NOW.equals(pattern)) {
                returnDate = currentDate;
            } else if (STARTOF_TODAY.equals(pattern)) {
                cal.set(Calendar.HOUR_OF_DAY, 0);
                cal.set(Calendar.MINUTE, 0);
                cal.set(Calendar.SECOND, 0);
                cal.set(Calendar.MILLISECOND, 0);
                returnDate = cal.getTime();
            } else if (ENDOF_TODAY.equals(pattern)) {
                cal.set(Calendar.HOUR_OF_DAY, HOUR_END_OF_DAY);
                cal.set(Calendar.MINUTE, MINUTE_END_OF_DAY);
                cal.set(Calendar.SECOND, SECOND_END_OF_DAY);
                cal.set(Calendar.MILLISECOND, MILLISECOND_END_OF_DAY);
                returnDate = cal.getTime();
            } else if (STARTOF_TOMORROW.equals(pattern)) {
                cal.add(Calendar.DAY_OF_MONTH, 1);
                cal.set(Calendar.HOUR_OF_DAY, 0);
                cal.set(Calendar.MINUTE, 0);
                cal.set(Calendar.SECOND, 0);
                cal.set(Calendar.MILLISECOND, 0);
                returnDate = cal.getTime();
            } else if (ENDOF_TOMORROW.equals(pattern)) {
                cal.add(Calendar.DAY_OF_MONTH, 1);
                cal.set(Calendar.HOUR_OF_DAY, HOUR_END_OF_DAY);
                cal.set(Calendar.MINUTE, MINUTE_END_OF_DAY);
                cal.set(Calendar.SECOND, SECOND_END_OF_DAY);
                cal.set(Calendar.MILLISECOND, MILLISECOND_END_OF_DAY);
                returnDate = cal.getTime();
            } else if (STARTOF_YESTERDAY.equals(pattern)) {
                cal.add(Calendar.DAY_OF_MONTH, -1);
                cal.set(Calendar.HOUR_OF_DAY, 0);
                cal.set(Calendar.MINUTE, 0);
                cal.set(Calendar.SECOND, 0);
                cal.set(Calendar.MILLISECOND, 0);
                returnDate = cal.getTime();
            } else if (ENDOF_YESTERDAY.equals(pattern)) {
                cal.add(Calendar.DAY_OF_MONTH, -1);
                cal.set(Calendar.HOUR_OF_DAY, HOUR_END_OF_DAY);
                cal.set(Calendar.MINUTE, MINUTE_END_OF_DAY);
                cal.set(Calendar.SECOND, SECOND_END_OF_DAY);
                cal.set(Calendar.MILLISECOND, MILLISECOND_END_OF_DAY);
                returnDate = cal.getTime();
            } else if (STARTOF_THISWEEK.equals(pattern)) {
                cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
                cal.set(Calendar.HOUR_OF_DAY, 0);
                cal.set(Calendar.MINUTE, 0);
                cal.set(Calendar.SECOND, 0);
                cal.set(Calendar.MILLISECOND, 0);
                returnDate = cal.getTime();
            } else if (ENDOF_THISWEEK.equals(pattern)) {
                cal.set(Calendar.DAY_OF_WEEK, Calendar.SATURDAY);
                cal.add(Calendar.DAY_OF_MONTH, 1);
                cal.set(Calendar.HOUR_OF_DAY, HOUR_END_OF_DAY);
                cal.set(Calendar.MINUTE, MINUTE_END_OF_DAY);
                cal.set(Calendar.SECOND, SECOND_END_OF_DAY);
                cal.set(Calendar.MILLISECOND, MILLISECOND_END_OF_DAY);
                returnDate = cal.getTime();
            } else if (STARTOF_NEXTWEEK.equals(pattern)) {
                cal.add(Calendar.DAY_OF_MONTH, DELTA_NEXT_WEEK);
                cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
                cal.set(Calendar.HOUR_OF_DAY, 0);
                cal.set(Calendar.MINUTE, 0);
                cal.set(Calendar.SECOND, 0);
                cal.set(Calendar.MILLISECOND, 0);
                returnDate = cal.getTime();
            } else if (ENDOF_NEXTWEEK.equals(pattern)) {
                cal.add(Calendar.DAY_OF_MONTH, DELTA_NEXT_WEEK);
                cal.set(Calendar.DAY_OF_WEEK, Calendar.SATURDAY);
                cal.add(Calendar.DAY_OF_MONTH, 1);
                cal.set(Calendar.HOUR_OF_DAY, HOUR_END_OF_DAY);
                cal.set(Calendar.MINUTE, MINUTE_END_OF_DAY);
                cal.set(Calendar.SECOND, SECOND_END_OF_DAY);
                cal.set(Calendar.MILLISECOND, MILLISECOND_END_OF_DAY);
                returnDate = cal.getTime();
            } else if (STARTOF_LASTWEEK.equals(pattern)) {
                cal.add(Calendar.DAY_OF_MONTH, DELTA_PREVIOUS_WEEK);
                cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
                cal.set(Calendar.HOUR_OF_DAY, 0);
                cal.set(Calendar.MINUTE, 0);
                cal.set(Calendar.SECOND, 0);
                cal.set(Calendar.MILLISECOND, 0);
                returnDate = cal.getTime();
            } else if (ENDOF_LASTWEEK.equals(pattern)) {
                cal.add(Calendar.DAY_OF_MONTH, DELTA_PREVIOUS_WEEK);
                cal.set(Calendar.DAY_OF_WEEK, Calendar.SATURDAY);
                cal.add(Calendar.DAY_OF_MONTH, 1);
                cal.set(Calendar.HOUR_OF_DAY, HOUR_END_OF_DAY);
                cal.set(Calendar.MINUTE, MINUTE_END_OF_DAY);
                cal.set(Calendar.SECOND, SECOND_END_OF_DAY);
                cal.set(Calendar.MILLISECOND, MILLISECOND_END_OF_DAY);
                returnDate = cal.getTime();
            } else if (STARTOF_THISMONTH.equals(pattern)) {
                cal.set(Calendar.DAY_OF_MONTH, 1);
                cal.set(Calendar.HOUR_OF_DAY, 0);
                cal.set(Calendar.MINUTE, 0);
                cal.set(Calendar.SECOND, 0);
                cal.set(Calendar.MILLISECOND, 0);
                returnDate = cal.getTime();
            } else if (ENDOF_THISMONTH.equals(pattern)) {
                cal.set(Calendar.DAY_OF_MONTH,
                        cal.getActualMaximum(Calendar.DAY_OF_MONTH));
                cal.set(Calendar.HOUR_OF_DAY, HOUR_END_OF_DAY);
                cal.set(Calendar.MINUTE, MINUTE_END_OF_DAY);
                cal.set(Calendar.SECOND, SECOND_END_OF_DAY);
                cal.set(Calendar.MILLISECOND, MILLISECOND_END_OF_DAY);
                returnDate = cal.getTime();
            } else if (STARTOF_LASTMONTH.equals(pattern)) {
                cal.set(Calendar.DAY_OF_MONTH, 1);
                cal.add(Calendar.MONTH, -1);
                cal.set(Calendar.HOUR_OF_DAY, 0);
                cal.set(Calendar.MINUTE, 0);
                cal.set(Calendar.SECOND, 0);
                cal.set(Calendar.MILLISECOND, 0);
                returnDate = cal.getTime();
            } else if (ENDOF_LASTMONTH.equals(pattern)) {
                cal.add(Calendar.MONTH, -1);
                cal.set(Calendar.DAY_OF_MONTH,
                        cal.getActualMaximum(Calendar.DAY_OF_MONTH));
                cal.set(Calendar.HOUR_OF_DAY, HOUR_END_OF_DAY);
                cal.set(Calendar.MINUTE, MINUTE_END_OF_DAY);
                cal.set(Calendar.SECOND, SECOND_END_OF_DAY);
                cal.set(Calendar.MILLISECOND, MILLISECOND_END_OF_DAY);
                returnDate = cal.getTime();
            } else if (STARTOF_NEXTMONTH.equals(pattern)) {
                cal.set(Calendar.DAY_OF_MONTH, 1);
                cal.add(Calendar.MONTH, 1);
                cal.set(Calendar.HOUR_OF_DAY, 0);
                cal.set(Calendar.MINUTE, 0);
                cal.set(Calendar.SECOND, 0);
                cal.set(Calendar.MILLISECOND, 0);
                returnDate = cal.getTime();
            } else if (ENDOF_NEXTMONTH.equals(pattern)) {
                cal.add(Calendar.MONTH, 1);
                cal.set(Calendar.DAY_OF_MONTH,
                        cal.getActualMaximum(Calendar.DAY_OF_MONTH));
                cal.set(Calendar.HOUR_OF_DAY, HOUR_END_OF_DAY);
                cal.set(Calendar.MINUTE, MINUTE_END_OF_DAY);
                cal.set(Calendar.SECOND, SECOND_END_OF_DAY);
                cal.set(Calendar.MILLISECOND, MILLISECOND_END_OF_DAY);
                returnDate = cal.getTime();
            } else if (STARTOF_THISYEAR.equals(pattern)) {
                cal.set(Calendar.DAY_OF_MONTH, 1);
                cal.set(Calendar.MONTH, Calendar.JANUARY);
                cal.set(Calendar.HOUR_OF_DAY, 0);
                cal.set(Calendar.MINUTE, 0);
                cal.set(Calendar.SECOND, 0);
                cal.set(Calendar.MILLISECOND, 0);
                returnDate = cal.getTime();
            } else if (ENDOF_THISYEAR.equals(pattern)) {
                cal.set(Calendar.MONTH, Calendar.DECEMBER);
                cal.set(Calendar.DAY_OF_MONTH,
                        cal.getActualMaximum(Calendar.DAY_OF_MONTH));
                cal.set(Calendar.HOUR_OF_DAY, HOUR_END_OF_DAY);
                cal.set(Calendar.MINUTE, MINUTE_END_OF_DAY);
                cal.set(Calendar.SECOND, SECOND_END_OF_DAY);
                cal.set(Calendar.MILLISECOND, MILLISECOND_END_OF_DAY);
                returnDate = cal.getTime();
            } else if (STARTOF_LASTYEAR.equals(pattern)) {
                cal.set(Calendar.DAY_OF_MONTH, 1);
                cal.set(Calendar.MONTH, Calendar.JANUARY);
                cal.add(Calendar.YEAR, -1);
                cal.set(Calendar.HOUR_OF_DAY, 0);
                cal.set(Calendar.MINUTE, 0);
                cal.set(Calendar.SECOND, 0);
                cal.set(Calendar.MILLISECOND, 0);
                returnDate = cal.getTime();
            } else if (ENDOF_LASTYEAR.equals(pattern)) {
                cal.set(Calendar.MONTH, Calendar.DECEMBER);
                cal.add(Calendar.YEAR, -1);
                cal.set(Calendar.DAY_OF_MONTH,
                        cal.getActualMaximum(Calendar.DAY_OF_MONTH));
                cal.set(Calendar.HOUR_OF_DAY, HOUR_END_OF_DAY);
                cal.set(Calendar.MINUTE, MINUTE_END_OF_DAY);
                cal.set(Calendar.SECOND, SECOND_END_OF_DAY);
                cal.set(Calendar.MILLISECOND, MILLISECOND_END_OF_DAY);
                returnDate = cal.getTime();
            } else if (STARTOF_NEXTYEAR.equals(pattern)) {
                cal.set(Calendar.DAY_OF_MONTH, 1);
                cal.set(Calendar.MONTH, Calendar.JANUARY);
                cal.add(Calendar.YEAR, 1);
                cal.set(Calendar.HOUR_OF_DAY, 0);
                cal.set(Calendar.MINUTE, 0);
                cal.set(Calendar.SECOND, 0);
                cal.set(Calendar.MILLISECOND, 0);
                returnDate = cal.getTime();
            } else if (ENDOF_NEXTYEAR.equals(pattern)) {
                cal.set(Calendar.MONTH, Calendar.DECEMBER);
                cal.add(Calendar.YEAR, 1);
                cal.set(Calendar.DAY_OF_MONTH,
                        cal.getActualMaximum(Calendar.DAY_OF_MONTH));
                cal.set(Calendar.HOUR_OF_DAY, HOUR_END_OF_DAY);
                cal.set(Calendar.MINUTE, MINUTE_END_OF_DAY);
                cal.set(Calendar.SECOND, SECOND_END_OF_DAY);
                cal.set(Calendar.MILLISECOND, MILLISECOND_END_OF_DAY);
                returnDate = cal.getTime();
            } else if (pattern.startsWith(PATTERN_PLUS)) {
                String strDelta = pattern.substring(
                        PATTERN_PLUS_SUBSTR_LENGTH, pattern.length());
                int delta = Integer.parseInt(strDelta);
                cal.add(Calendar.DAY_OF_MONTH, delta);
                returnDate = cal.getTime();
            } else if (pattern.startsWith(PATTERN_MINUS)) {
                String strDelta = pattern.substring(
                        PATTERN_MINUS_SUBSTR_LENGTH, pattern.length());
                int delta = Integer.parseInt(strDelta);
                cal.add(Calendar.DAY_OF_MONTH, -(delta));
                returnDate = cal.getTime();
            }
        }
        return returnDate;

    }
}

Related

1. convertToDate(String val)
2. convertToDate(String value)
3. convertToDateTimeNoSec(String date)
4. convertToDateTimeString(Date d1)
5. convertToDateWithTimeString(Date date)
6. getDateFromReccurenceInterval(int reqDOW, int reqDOM, int time)
7. getDateFromStartTime(String startTime)
8. getDateFromString(String s)
9. getDateFromString(String strDate, String strTime)