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Which of these correctly stops accepting new tasks while letting submitted ones finish?

  • A.es.stop();
  • B.es.shutdown();
  • C.es.shutdownNow();
  • D.es.close();

Answer: B

Correct answer: es.shutdown();

shutdown() refuses new submissions and lets the queued and running tasks finish, which is the orderly stop. shutdownNow() also interrupts the running tasks and returns those never started, which is the abrupt one. The two are commonly used together, with a timed awaitTermination between them.

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