nRelógio de Contagem Regressiva
npublic class Countdown
{
n public static void main(String[] args)
throws InterruptedException {
n int time = Integer.parseInt(args[0]);
n Queue<Integer> queue = new
LinkedList<Integer>();
n for (int i = time; i >= 0; i--)
n queue.add(i);
n while ( !queue.isEmpty() ) {
n System.out.println(queue.remove());
n Thread.sleep(1000);
n }
n }
n}