# Java Examples - Calculating Factorial

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## Problem Description:

How to use method for calculating Factorial of a number?

## Solution:

This example shows the way of using method for calculating Factorial of 9(nine) numbers.

public class MainClass { public static void main(String args[]) { for (int counter = 0; counter <= 10; counter++){ System.out.printf("%d! = %d\n", counter, factorial(counter)); } } public static long factorial(long number) { if (number <= 1) return 1; else return number * factorial(number - 1); } }

## Result:

The above code sample will produce the following result.

0! = 1 1! = 1 2! = 2 3! = 6 4! = 24 5! = 120 6! = 720 7! = 5040 8! = 40320 9! = 362880 10! = 3628800

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