Java Month Calculate getAgeInMonths(Date startDate, Date endDate)

Description

get Age In Months

License

Mozilla Public License

Declaration

public static int getAgeInMonths(Date startDate, Date endDate) 

Method Source Code

//package com.java2s;
/**//from w w  w. j  av a  2s  . co  m
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations under
 * the License.
 *
 * The Original Code is OpenELIS code.
 *
 * Copyright (C) CIRG, University of Washington, Seattle WA.  All Rights Reserved.
 *
 */

import java.util.*;

public class Main {
    public static int getAgeInMonths(Date startDate, Date endDate) {
        Calendar start = new GregorianCalendar();
        start.setTime(startDate);
        int startMOY = start.get(Calendar.MONTH);
        int startYear = start.get(Calendar.YEAR);
        Calendar end = new GregorianCalendar();
        end.setTime(endDate);
        int endMOY = end.get(Calendar.MONTH);
        int endYear = end.get(Calendar.YEAR);
        // months between Jan. of start year and Jan. of end year
        int dMons = (endYear - startYear) * 12;
        // correct to actual months.
        dMons += endMOY - startMOY;
        // if the start day of month is after end day of month we have one too
        // months.
        if (start.get(Calendar.DAY_OF_MONTH) > end.get(Calendar.DAY_OF_MONTH)) {
            --dMons;
        }
        return dMons;
    }
}

Related

1. beforeAMonth()
2. calendarMonthToInt(int calendarMonth)
3. currentMonth()
4. divideIntoMonthlyIntervals(Date start, Date end)
5. endOfLastMonth()
6. getAlphaMonth(String mon)
7. getCurrentMonth()
8. getCurrentMonth()
9. getCurrentMonthName()