Hi Friend,

Try the following code:

import java.util.*;
class  Factorial{
    public static void main(String[] args) 
    {
        Scanner input=new Scanner(System.in);
        System.out.print("Enter value of m: ");
        int m=input.nextInt();
        long num=m;
        for(int i=m;i>1;i--){
            num=num*(i-1);
        }
        System.out.println(num);
    }
}

Thanks