Mastering Java: The Ultimate Quiz for 'Thinking in Java'

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Dive into the depths of Java with our quiz based on "Thinking in Java, Fourth Edition" by Bruce Eckel. Test your knowledge, solidify concepts, and prepare for certification with challenging questions and insightful feedback.

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Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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How do you check if a thread is a daemon?

  1. isDaemon()

  2. isService()

  3. isBackground()

  4. isRunning()

The correct answer is: isDaemon()

The isDaemon() method is used to check if a thread is a daemon thread. Daemon threads are background threads that run continuously without blocking the program from exiting. Therefore, options B and C are incorrect because they are not related to daemon threads. Option D is incorrect because it is a generic method used to check if a thread is currently running, but it does not specifically check for daemon threads.

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