Java Date Between daysBetween(Date startDate, Date endDate)

Description

days Between

License

Open Source License

Declaration

public static long daysBetween(Date startDate, Date endDate) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2010 Robert "Unlogic" Olofsson (unlogic@unlogic.se).
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser Public License v3
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/lgpl-3.0-standalone.html
 ******************************************************************************/

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

public class Main {
    public static long daysBetween(Date startDate, Date endDate) {

        Calendar start = Calendar.getInstance();
        start.setTime(startDate);/*from   w w w . j  ava  2 s . c om*/

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

        return daysBetween(start, end);
    }

    public static long daysBetween(Calendar startDate, Calendar endDate) {

        startDate = (Calendar) startDate.clone();

        long daysBetween = 0;

        while (startDate.get(Calendar.YEAR) < endDate.get(Calendar.YEAR)) {

            if (startDate.get(Calendar.DAY_OF_YEAR) != 1) {

                int diff = startDate.getMaximum(Calendar.DAY_OF_YEAR) - startDate.get(Calendar.DAY_OF_YEAR);

                diff++;

                startDate.add(Calendar.DAY_OF_YEAR, diff);

                daysBetween += diff;

            } else {

                daysBetween += startDate.getMaximum(Calendar.DAY_OF_YEAR);

                startDate.add(Calendar.YEAR, 1);
            }
        }

        daysBetween += endDate.get(Calendar.DAY_OF_YEAR) - startDate.get(Calendar.DAY_OF_YEAR);

        return daysBetween;
    }
}

Related

1. DaysBetween(Date date1, Date date2)
2. daysBetween(Date smdate, Date bdate)
3. daysBetween(Date smdate, Date bdate)
4. daysBetween(Date smdate, Date bdate)
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9. daysBetween(String beginDate, String endDate)