//CountDownTime.java

public class CountDownTimer
{
    public static void countDown(int countInt)
    {
        if (countInt <= 0)
        {
            System.out.println("GO!");
        }
        else
        {
            System.out.println(countInt);
            countDown(countInt - 1);
        }
    }

    public static void main (String[] args)
    {
        countDown(2);
    }
}