# This program find factorial of a given number (5! = 5*4*3*2*1)

	class Factorial{  
 public static void main(String args[]){  
  int i,fact=1,n;
  Scanner sc = new Scanner(System.in);

    System.out.print("Enter a number to find factorial: ");
    n = sc.nextInt();
  for(i=1;i<=n;i++){    
      fact=fact*i;    
  }    
  System.out.println("Factorial of "+n+" is: "+fact);    
 }  
}  




Output
Enter a number to find factorial: 4
factorial of a is 24