Java Year differenceInYears(final Calendar a, final Calendar b)

Description

Calculates difference in years between to dates.

License

Open Source License

Parameter

Parameter	Description
a	first element of substraction of dates.
b	second element of substraction of dates.

Return

a-b in fractions of year.

Declaration

public static double differenceInYears(final Calendar a, final Calendar b) 

Method Source Code

//package com.java2s;
/*/*from  ww w.  j  av  a2 s. co  m*/
 * Copyright 2011 - 2012
 * All rights reserved. License and terms according to LICENSE.txt file.
 * The LICENSE.txt file and this header must be included or referenced 
 * in each piece of code derived from this project.
 */

import java.util.*;

public class Main {
    private static final long MILLISECONDS_PER_YEAR = 365 * 24 * 60 * 60 * 1000;

    /**
     * Calculates difference in years between to dates.
     * @param a first element of substraction of dates.
     * @param b second element of substraction of dates.
     * @return a-b in fractions of year.
     */
    public static double differenceInYears(final Calendar a, final Calendar b) {
        final long millisDif = a.getTimeInMillis() - b.getTimeInMillis();
        return millisDif / MILLISECONDS_PER_YEAR;
    }
}

Related

1. createCalendarAtBeginningOfYear(int year)
2. currentYear()
3. daysInYear(int year)
4. diffYears(Date day1, Date day2)
5. IsInLeapYear(Date date1)
6. isLeapYear(int year)
7. nextYears(int diff)