Leaper if expression is faulty

import java.util.*;



public class LeapYear {



    public static void main (String args[]) {



        Scanner scan = new Scanner(System.in);

        int userInput = scan.nextInt();

        boolean leapYearisTrue = false;



        while ( userInput != 0 ) {

            if (userInput % 4 == 0) {

                if ( (userInput % 100 == 0) && (userInput % 400 != 0) ) {

                    leapYearisTrue = false;

                    System.out.println (leapYearisTrue);

                }

                else {

                    leapYearisTrue = true;

                    System.out.println (leapYearisTrue);

                }

                userInput = scan.nextInt();

            }

        }

    }

}

Whenever I input a value that IS a leap year, the program runs smoothly and does what it's supposed to:

2000

true

1960

true

400

true

but whenever I input a non-leap year, it doesn't print false and would no longer print that a number is a leap year:

403

400

2000 ( this is a leap year , yet it doesn't print true)

2004