Java Date Difference diffMonth(Date start, Date end)

Description

diff Month

License

Open Source License

Declaration

public static int diffMonth(Date start, Date end) 

Method Source Code

//package com.java2s;
/**//from www  .j a v a 2 s.  c o  m
The MIT License (MIT) * Copyright (c) 2015 ????
    
 * 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.Calendar;
import java.util.Date;

public class Main {

    public static int diffMonth(Date start, Date end) {
        if (start.after(end)) {
            Date t = start;
            start = end;
            end = t;
        }
        Calendar startCalendar = Calendar.getInstance();
        startCalendar.setTime(start);
        Calendar endCalendar = Calendar.getInstance();
        endCalendar.setTime(end);
        Calendar temp = Calendar.getInstance();
        temp.setTime(end);
        temp.add(Calendar.DATE, 1);

        int year = endCalendar.get(Calendar.YEAR) - startCalendar.get(Calendar.YEAR);
        int month = endCalendar.get(Calendar.MONTH) - startCalendar.get(Calendar.MONTH);

        if ((startCalendar.get(Calendar.DATE) == 1) && (temp.get(Calendar.DATE) == 1)) {
            return year * 12 + month + 1;
        } else if ((startCalendar.get(Calendar.DATE) != 1) && (temp.get(Calendar.DATE) == 1)) {
            return year * 12 + month;
        } else if ((startCalendar.get(Calendar.DATE) == 1) && (temp.get(Calendar.DATE) != 1)) {
            return year * 12 + month;
        } else {
            return (year * 12 + month - 1) < 0 ? 0 : (year * 12 + month);
        }
    }
}

Related

1. differenceOnMonth(Date date1, Date date2)
2. differenceOnYear(Date date1, Date date2)
3. diffIntoMilliSecond(java.util.Date date, java.util.Date date1)
4. diffMillis(Date d1, Date d2)
5. diffMonth(Date before, Date after)
6. diffOfDate(String begin, String end)
7. diffY(Date endDate, Date startDate)
8. getDateDiff(String startDate, String endDate)
9. getDateDiff(String startDt, String endDt)