LeapYear.java

import java.util.*;  
public class LeapYear {

    public static void main(String[] args) {
        Scanner sc= new Scanner(System.in);  
        System.out.println("Enter The year :  ");  
        int year =  sc.nextInt();
        boolean leap = false;

        if(year % 4 == 0)
        {
            if( year % 100 == 0)
            {
                // year is divisible by 400, hence the year is a leap year
                if ( year % 400 == 0)
                    leap = true;
                else
                    leap = false;
            }
            else
                leap = true;
        }
        else
            leap = false;

        if(leap)
            System.out.println(year + " is a leap year.");
        else
            System.out.println(year + " is not a leap year.");
    }
}