Q12.Factorial of a number in Java

 package practice1;

public class FactorialofaNumber {

public static void main(String[] args) {

        int num = 5, i = 1;

        long factorial = 1;

        while(i <= num)

        {

            factorial *= i;

            i++;

        }

        System.out.printf("Factorial of %d = %d", num, factorial);

    }

}