Factorial of Number

    package com.nataraja.b;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Fact {
public static void main(String[] args) throws NumberFormatException, IOException {
 System.out.println("Enter a Number:");
 BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
 int n=Integer.parseInt(br.readLine());
 
 int f=fact(n);
 System.out.println(f);
}

public static int fact(int n){
 if(n==0)
  return 1;
 else
  return fact(n-1)*n;
}
}