Java program to show Factorail Number:

Java program to show Factorail Number:

import java.util.Scanner;

class MyFactorial {
  public static void main(String args[]) {
    int n, fact = 1;
 
    System.out.println("Enter an integer to calculate it's factorial");
    Scanner in = new Scanner(System.in);  
    n = in.nextInt();
 
    if ( n < 0 ) {
      System.out.println("Number should be non-negative.");
    } else {
      for ( int c = 1 ; c <= n ; c++ ) {
        fact *= c;
      }
      System.out.println("Factorial of "+n+" is = "+fact);
    }
  }
}
The output of this program is as:
Enter an integer to calculate it's factorial
6
Factorial of 6 is = 720