Java Day End getWorkingDaysBetweenTwoDates(Date startDate, Date endDate)

Description

Original code from source: http://stackoverflow.com/questions/4600034/calculate -number-of-weekdays-between-two-dates-in-java

License

Open Source License

Parameter

Parameter	Description
startDate	a parameter
endDate	a parameter

Declaration

public static int getWorkingDaysBetweenTwoDates(Date startDate, Date endDate) 

Method Source Code

//package com.java2s;
/*/*  w w w  .  ja va 2 s.co m*/
Copyright (c) 2012,2013 Mirco Attocchi
       
This file is part of WebAppCommon.
    
WebAppCommon is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
WebAppCommon 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.
    
You should have received a copy of the GNU Lesser General Public License
along with WebAppCommon.  If not, see <http://www.gnu.org/licenses/>.
 */

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

public class Main {
    /**
     * Original code from source:
     * http://stackoverflow.com/questions/4600034/calculate
     * -number-of-weekdays-between-two-dates-in-java
     * 
     * @param startDate
     * @param endDate
     * @return
     */
    public static int getWorkingDaysBetweenTwoDates(Date startDate, Date endDate) {

        startDate = setTime(startDate, 12, 0);
        endDate = setTime(endDate, 12, 0);

        Calendar startCal = Calendar.getInstance();
        startCal.setTime(startDate);

        Calendar endCal = Calendar.getInstance();
        endCal.setTime(endDate);

        int workDays = 0;

        // Return 0 if start and end are the same
        if (startCal.getTimeInMillis() == endCal.getTimeInMillis()) {
            return 0;
        }

        if (startCal.getTimeInMillis() > endCal.getTimeInMillis()) {
            startCal.setTime(endDate);
            endCal.setTime(startDate);
        }

        do {
            // excluding start date
            startCal.add(Calendar.DAY_OF_MONTH, 1);
            if (startCal.get(Calendar.DAY_OF_WEEK) != Calendar.SATURDAY
                    && startCal.get(Calendar.DAY_OF_WEEK) != Calendar.SUNDAY) {
                ++workDays;
            }
        } while (startCal.getTimeInMillis() < endCal.getTimeInMillis()); // excluding
        // end
        // date

        return workDays;
    }

    /**
     * Set time of a Date
     * 
     * @param aDate
     * @param hours
     * @param minutes
     * @return
     */
    public static Date setTime(Date aDate, int hours, int minutes) {
        Calendar c = Calendar.getInstance();
        c.setTime(aDate);
        c.set(Calendar.HOUR_OF_DAY, hours);
        c.set(Calendar.MINUTE, minutes);
        c.set(Calendar.SECOND, 0);
        c.set(Calendar.MILLISECOND, 0);

        return c.getTime();
    }
}

Related

1. getTimeInterval(Date startDate, Date endDate)
2. getTotalDays(Date startDate, Date endDate)
3. getTotalMonths(final Date startDateToCheck, final Date endDateToCheck)
4. getTrendTime(Date date)
5. getWorkingDays(Calendar start, Calendar end, final Long[] holidays)
6. getYearsBetween(Date startDate, Date endDate)
7. getYearsBetweenDate(Date begin, Date end)
8. isBetweenDate(Date date, Date startDate, Date endDate)
9. isBetWeenDates(Date in, Date from, Date to)