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Calculating Age using Java

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;
	}

}

 

About Mohaideen Jamil


I'm a Full stack developer of IT exp in J2EE, AngularJs, MicroServices, Docker, Spring (Boot, MVC, Cloud), Bluemix, DevOps. Follow me on Facebook or Google Plus. If you like my tutorials, consider making a donation to this charity, thanks.

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