Calculating Age using Java
To calculate age from the given year , the following sippnet of code can be used.
package com.simplecode;
import java.util.GregorianCalendar;
import java.util.Calendar;
public class CalculateAge {
// Month Representations
static final int JAN = 0;
static final int FEB = 1;
static final int MAR = 2;
static final int APR = 3;
static final int MAY = 4;
static final int JUN = 5;
static final int JUL = 6;
static final int AUG = 7;
static final int SEP = 8;
static final int OCT = 9;
static final int NOV = 10;
static final int DEC = 11;
public static void main(String[] args) {
System.out.println("Born In 1982-JUL-11. Current Age: "
+ calculateMyAge(1982, JUL, 11));
System.out.println("Born In 1957-DEC-09. Current Age: "
+ calculateMyAge(1957, DEC, 9));
}
private static int calculateMyAge(int year, int month, int day) {
Calendar birthCal = new GregorianCalendar(year, month, day);
Calendar presentCal = new GregorianCalendar();
int age = presentCal.get(Calendar.YEAR) - birthCal.get(Calendar.YEAR);
boolean isMonthGreater = birthCal.get(Calendar.MONTH) >= presentCal
.get(Calendar.MONTH);
boolean isMonthSameButDayGreater = birthCal.get(Calendar.MONTH) == presentCal
.get(Calendar.MONTH)
&& birthCal.get(Calendar.DAY_OF_MONTH) > presentCal
.get(Calendar.DAY_OF_MONTH);
if (isMonthGreater || isMonthSameButDayGreater) {
age = age - 1;
}
return age;
}
}
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