Factorial program in java

Write a program to find factorial of given number-

Formula : factorial of n = 1 * 2 * 3 *  ......* n ;
Example : 5 factorial = 1 * 2 * 3 * 4 * 5 = 120.

Factorial of number

class FactorialDemo {
  public static void main(String[] args) {
   int number = 5;
   int fact = 1;
   for (int i = 1; i <= number; i++) {
    fact = fact * i;
   }
   System.out.println("Factorial of " + number + "=" + fact);
  }
}

Output: 

Factorial of 5=120

Factorial using Recursion : 

Factorial of number using recursion

class FactorialDemo {
   public static void mainFact2(String[] args) {
    int number = 5;
    System.out.println(fact(number));
   }
   
   private static int fact(int n) {
    if (n <= 1)
       return 1;
    else
       return n * fact(n - 1);
   }
}

Output: 120