In this example, we will calculate the factorial of a number taking the value from the user.
You can also learn to find the Factorial of a Number in Java Using for loop.
Recursion refers to the function calling itself inside its function in a program.
Before we begin, you should have the knowledge of the following:
Factorial of n number: Factorial of n number is the product of all the positive descending integers and is denoted by n!.
factorial of n (n!) = n * (n-1) * (n-2) * (n-3)….1
factorial of 5 (n!) = 5 * 4 * 3 * 2 * 1
NOTE: Factorial of 0 (0!) = 1
Factorial Program using Recursion in java.
//find the factorial of a number using recursion in java
public class FactorialRecursion
public static void main(String args)
Scanner scanner = new Scanner(System.in);
System.out.print("Enter the number: ");
int num = scanner.nextInt();
//Called the user defined function fact
int factorial = fact(num);
System.out.println("Factorial of entered number is: " + factorial);
static int fact(int n)
if (n == 1)
output = fact(n - 1) *n; //recursion
Enter the number: 4
Factorial of entered number is: 24
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