Java SQL Date Create getDayByWeekString(Date date, String weekString)

Description

get Day By Week String

License

Open Source License

Parameter

Parameter	Description
date	a parameter
weekString	a parameter

Declaration

public static Date getDayByWeekString(Date date, String weekString) 

Method Source Code

//package com.java2s;
/*/*ww  w.jav  a2s. c  om*/
 * $Id: UtilDateTime.java,v 1.2 2005/01/31 05:27:55 jdon Exp $
 *
 *  Copyright (c) 2001, 2002 The Open For Business Project - www.ofbiz.org
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a
 *  copy of this software and associated documentation files (the "Software"),
 *  to deal in the Software without restriction, including without limitation
 *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
 *  and/or sell copies of the Software, and to permit persons to whom the
 *  Software is furnished to do so, subject to the following conditions:
 *
 *  The above copyright notice and this permission notice shall be included
 *  in all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 *  OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 *  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 *  CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT
 *  OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
 *  THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

import java.util.*;
import java.sql.Timestamp;
import java.text.*;

public class Main {
    public static Map<String, Integer> week2int = new HashMap<String, Integer>();

    /**
     * 
     * @param date
     * @param weekString
     * @return
     */
    public static Date getDayByWeekString(Date date, String weekString) {
        return getDayByWeekString(date, weekString, false);
    }

    /**
     * 
     * @param date
     * @param weekString
     * @return
     */
    public static Date getDayByWeekString(Date date, String weekString, Boolean byAdd) {
        if (week2int.containsKey(weekString) && date != null) {
            Calendar calendar = Calendar.getInstance();
            calendar.setTime(date);
            if (byAdd) {
                calendar.add(Calendar.DAY_OF_MONTH, 1);
            }
            int intWeek = calendar.get(Calendar.DAY_OF_WEEK) == 1 ? 8 : calendar.get(Calendar.DAY_OF_WEEK);
            while (true) {
                if (intWeek == week2int.get(weekString)) {
                    String dstr = toDateString(calendar.getTime());
                    return Timestamp.valueOf(dstr + " 00:00:00");
                    //return calendar.getTime();
                }
                calendar.add(Calendar.DAY_OF_MONTH, 1);
                intWeek = calendar.get(Calendar.DAY_OF_WEEK) == 1 ? 8 : calendar.get(Calendar.DAY_OF_WEEK);
            }
        }
        return null;
    }

    public static String toDateString(Date date, String pattern) {
        return new SimpleDateFormat(pattern).format(date);
    }

    /** Makes a date String in the format MM/DD/YYYY from a Date
     * @param date The Date
     * @return A date String in the format MM/DD/YYYY
     */
    public static String toDateString(java.util.Date date) {
        if (date == null)
            return "";
        Calendar calendar = Calendar.getInstance();

        calendar.setTime(date);
        int month = calendar.get(Calendar.MONTH) + 1;
        int day = calendar.get(Calendar.DAY_OF_MONTH);
        int year = calendar.get(Calendar.YEAR);
        String monthStr;
        String dayStr;
        String yearStr;

        if (month < 10) {
            monthStr = "0" + month;
        } else {
            monthStr = "" + month;
        }
        if (day < 10) {
            dayStr = "0" + day;
        } else {
            dayStr = "" + day;
        }
        yearStr = "" + year;
        return yearStr + "-" + monthStr + "-" + dayStr; // + "-" + yearStr;
    }
}

Related

1. getDateString2()
2. getDay(Date date)
3. getDay(final java.sql.Date date)
4. getDay(String stringDate)
5. getDayByMonthSeed(Date date, int monthSeed)
6. getDays(Date from, Date to)
7. getDaysLater(Date date, int days)
8. getDayStart(Date stamp)
9. getLastDateOfQuarter()