Discussion
Which of these correctly schedules a task to run after a delay?
Answer: D
Correct answer: ScheduledExecutorService s = Executors.newScheduledThreadPool(1); s.schedule(task, 5, TimeUnit.SECONDS);
Scheduling requires a ScheduledExecutorService, which a fixed thread pool is not, and the delay must carry a TimeUnit so that the number is unambiguous. Executors is a factory and has no schedule method of its own.
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