Java Multithreading MCQs with answers Page - 5

You will find multiple-choice questions (MCQs) related to #Java Multithreading here. Go through these questions to prepare effectively for your upcoming exams and interviews.

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Q. Which interface is used to represent a task that returns a result in Java?

  • (A) Runnable
  • (B) Callable
  • (C) Executor
  • (D) Future

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Q. Which method of the `Thread` class causes the currently executing thread to sleep?

  • (A) wait()
  • (B) pause()
  • (C) sleep()
  • (D) stop()

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Q. Which class is used to retrieve the result of a `Callable` task?

  • (A) Runnable
  • (B) Thread
  • (C) Future
  • (D) Executor

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Q. Which of the following provides a better alternative to manually creating threads?

  • (A) ThreadGroup
  • (B) Runnable
  • (C) Executors
  • (D) ThreadPoolExecutor

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Q. What does the `Thread.yield()` method do?

  • (A) Terminates the thread
  • (B) Sleeps the thread for a second
  • (C) Allows other threads of equal priority to execute
  • (D) Blocks the thread

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Q. What is the use of `ThreadLocal` in Java?

  • (A) To store thread pools
  • (B) To isolate variable values per thread
  • (C) To store the ID of a thread
  • (D) To create child threads

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Q. Which exception is thrown when a thread is interrupted during sleep?

  • (A) ThreadInterruptedException
  • (B) IllegalThreadStateException
  • (C) InterruptedException
  • (D) IOException

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Q. Which method in ExecutorService stops all actively executing tasks?

  • (A) shutdown()
  • (B) terminate()
  • (C) shutdownNow()
  • (D) cancel()

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Q. Which of these is a subclass of the Thread class?

  • (A) FutureTask
  • (B) ScheduledThreadPoolExecutor
  • (C) TimerTask
  • (D) None of the above

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Q. Which of the following is not a benefit of using thread pools?

  • (A) Reduces resource consumption
  • (B) Improves response time
  • (C) Improves memory leak risk
  • (D) Efficient thread management

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