Timer lent + Gestion son

import java.util.Timer;
import java.util.TimerTask;
import java.util.concurrent.atomic.AtomicLong;

public class Test
{
    public static void main(String[] args)
    {
        final long start = System.currentTimeMillis();
        final AtomicLong n = new AtomicLong();
        
        final long delay = 0;
        final long period = 5;
        
        TimerTask task = new TimerTask()
        {
            @Override
            public void run()
            {
                long expected = delay + n.getAndIncrement() * period;
                long real = System.currentTimeMillis() - start;
                long delta = real - expected;
                System.out.printf("Théorique = %d\tRéel = %d\tRetard = %d\n",
                                  expected, real, delta);
            }
        };
        
        Timer timer = new Timer();
        timer.schedule(task, delay, period);
    }
}