Java Factorial Using Recursion

/*
	Java Factorial Using Recursion Example
	This Java example shows how to generate factorial of a given number
	using recursive function.
*/
 
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
 
public class JavaFactorialUsingRecursion {
 
	public static void main(String args[]) throws NumberFormatException, IOException{
 
		System.out.println("Enter the number: ");
 
		//get input from the user
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		int a = Integer.parseInt(br.readLine());
 
		//call the recursive function to generate factorial
		int result= fact(a);
 
 
		System.out.println("Factorial of the number is: " + result);
	}
 
	static int fact(int b)
	{
		if(b <= 1)
			//if the number is 1 then return 1
			return 1;
		else
			//else call the same function with the value - 1
			return b * fact(b-1);
	}
}
 
/*
Output of this Java example would be
 
Enter the number: 
5
Factorial of the number is: 120
*/