Java Program To Find The Factorial Of A Number Using Recursion

In this Java Program, we calculate the factorial of the number using recursion.

Factorial of n is the product of all the positive descending integers. It is denoted by n!

For example : 4! = 4 * 3 * 2 * 1 = 24

Logic : fact = fact * i;

Step 1 : Create main method

Step 2  : Create variable factorial and store factorial of 4 in it.

Step 3  : Print the number

Step 4 : Create a static function which returns 1

Step 5 : Create recursion function which calls itself

Program :

public class FactorialDemo2 {

    public static void main(String[] args){

        int factorial = fact(4);

        System.out.println("Factorial of 4 is:"+factorial);

    }

    static int fact(int n)

    {

    int output;

    if(n==1){

        return 1;

    }

    //Recursion : Function calling itself

    output = fact(n-1)*n;

    return output;

    }

}

Output :

Factorial of 4 is : 24

For execution of the same do visit my YouTube Channel :

https://youtu.be/xGJ2VBxZuRc