Method DelayedTask

lowlevel/DelayQueueDemo.java:17–22

(int delayInMilliseconds)

  protected static List<DelayedTask> sequence =
    new ArrayList<>();
  DelayedTask(int delayInMilliseconds) {
    delta = delayInMilliseconds;
    trigger = System.nanoTime() +
      NANOSECONDS.convert(delta, MILLISECONDS);
    sequence.add(this);
  }
  @Override public long getDelay(TimeUnit unit) {
    return unit.convert(
      trigger - System.nanoTime(), NANOSECONDS);