Java Month Convert differenceMonth(String strDate1, String strDate2)

Description

difference Month

License

Open Source License

Declaration

public static int differenceMonth(String strDate1, String strDate2) throws ParseException 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.text.DateFormat;
import java.text.ParseException;

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

public class Main {

    public static int differenceMonth(String strDate1, String strDate2) throws ParseException {
        Date date1 = DateFormat.getDateInstance().parse(strDate1);
        Date date2 = DateFormat.getDateInstance().parse(strDate2);
        return differenceMonth(date1, date2);
    }/*from  w ww.j a  va  2 s.  co m*/

    public static int differenceMonth(Date date1, Date date2) {
        Calendar cal1 = Calendar.getInstance();
        cal1.setTime(date1);
        cal1.set(Calendar.DATE, 1);
        Calendar cal2 = Calendar.getInstance();
        cal2.setTime(date2);
        cal2.set(Calendar.DATE, 1);
        int count = 0;
        if (cal1.before(cal2)) {
            while (cal1.before(cal2)) {
                cal1.add(Calendar.MONTH, 1);
                count--;
            }
        } else {
            count--;
            while (!cal1.before(cal2)) {
                cal1.add(Calendar.MONTH, -1);
                count++;
            }
        }
        return count;
    }

    public static Calendar add(Calendar cal, int addYera, int addMonth, int addDate, int addHour, int addMinute,
            int addSecond, int addMillisecond) {
        if (cal == null) {
            cal = Calendar.getInstance();
        }
        cal.add(Calendar.YEAR, addYera);
        cal.add(Calendar.MONTH, addMonth);
        cal.add(Calendar.DATE, addDate);
        cal.add(Calendar.HOUR_OF_DAY, addHour);
        cal.add(Calendar.MINUTE, addMinute);
        cal.add(Calendar.SECOND, addSecond);
        cal.add(Calendar.MILLISECOND, addMillisecond);
        return cal;
    }
}

Related

1. ConvertNumToMonth(int mesEntrada)
2. convertToAlphaMonth(final int importIntMonth)
3. convertToMonth_long(int month)
4. convertToNumericMonth(String importStrMonth)
5. createFutureDate(int days, int months)
6. isCurMonth(String month)
7. month()
8. month(Date date, Locale locale)
9. month2String(Date date)