Calculated the factorial of given Number ~ IN JAVA

PROGRAME THAT CALULATED THE FACTORIAL NUMBER OF GIVEN NUMBER IN JAVA

import java.util.Scanner; public class FactorialNumber { public static void main(String[] args) { System.out.println(factorialNumber(input("WELCOME IN CALCULATED FACTORIAL PROGRAM !! \n\n Enter the number: "))); } // These function use for taking input from user private static int input(String command) { Scanner input = new Scanner(System.in); System.out.print(command); return input.nextInt(); } // This function calculated the factorial number private static long factorialNumber(int number){ long i = 1, result = 1; while (i <= number){ result *= i; i++; } return result; } }