factorial with full encapsulation

class Fact
{
    private int fact=1;

    public void calcFact(int n)
    {
        for(int i=n;i>1;i--)
        fact=fact*i;
    }

    public int getFact()
    {
        return fact;
    }

}

class TestFact
{
    public static void main(String... args)
    {
        Fact f=new Fact();
        f.calcFact(3);
        System.out.println("factorial of the number is = " + f.getFact() );
    }
}