Fatorial - first try

class Fatorial {
    double result;

    double calculateFatorial(int element) {
        element *= element-1;
        return element;
    }

    public static void main(String[] args) {
        Fatorial fatorial = new Fatorial();
        fatorial.result = 1;

        for (int i = 6; i >= 1; i-=2) {
            fatorial.result *= fatorial.calculateFatorial(i);
        }

        System.out.println("Fatorial : " + fatorial.result);
    }
}