MENGHITUNG NILAI FAKTORIAL java Netbeans

package nilaifaktorial;

import java.io.*;

public class Main {

public static void main(String[] args)throws Exception{

InputStreamReader key = new InputStreamReader(System.in);

BufferedReader input = new BufferedReader(key);

String n;

int i,j,k=1;

System.out.print("Masukkan Nilai untuk di faktorialkan = ");

n=input.readLine();

j=Integer.parseInt(n);

System.out.print(j +" "+"!=");

for(i=j;i>=1;i--){

                System.out.print(i);

                if(i>1)

                System.out.print("x");

                k=k*i;

    }

System.out.print("\n");

System.out.println(j+ " " +"!="+" "+k);

    }

}