Java Day From getAge(Date birthDay)

Description

get Age

License

Apache License

Declaration

public static int getAge(Date birthDay) throws Exception 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.util.*;

public class Main {
    public static int getAge(Date birthDay) throws Exception {
        Calendar cal = Calendar.getInstance();

        if (cal.before(birthDay)) {
            throw new IllegalArgumentException("The birthDay is before Now.It's unbelievable!");
        }//w  w  w . j  a  va2  s. c om
        int yearNow = cal.get(Calendar.YEAR);
        int monthNow = cal.get(Calendar.MONTH);
        int dayOfMonthNow = cal.get(Calendar.DAY_OF_MONTH);
        cal.setTime(birthDay);

        int yearBirth = cal.get(Calendar.YEAR);
        int monthBirth = cal.get(Calendar.MONTH);
        int dayOfMonthBirth = cal.get(Calendar.DAY_OF_MONTH);

        int age = yearNow - yearBirth;

        if (monthNow <= monthBirth) {
            if (monthNow == monthBirth) {
                if (dayOfMonthNow < dayOfMonthBirth)
                    age--;
            } else {
                age--;
            }
        }
        return age;
    }
}

Related

1. distanceToNowInDaysIgnoreTime(Date date)
2. equalsDay(final Date date1, final Date date2)
3. explDay(Date date)
4. firstDayOfCentury(final int century)
5. get23HourOfDay(Date date)
6. getBeforeDate_(Date date, int day)
7. getDateByDay(Date date)
8. getDateByNum(int day)
9. getDateFromDayNum(int dayNum)