Find out factorial of large number

The following program prints the factorial of large number. The program is written using java.

Output : 

Code : 

import java.math.BigInteger;
import java.util.Scanner;

public class Factorial2 {

   public static void main(String[] args) {
       Scanner s = new Scanner(System.in);
       System.out.print("Enter a number: ");
       int n = s.nextInt();
       String fact = factorial(n);
       System.out.println("Factorial is " + fact);
   }

   public static String factorial(int n) {
       BigInteger fact = new BigInteger("1");
       for (int i = 1; i <= n; i++) {
           fact = fact.multiply(new BigInteger(i + ""));
       }
       return fact.toString();
   }
}