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.

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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To reset the count of CountDownLatch, which class can be used instead?

Semaphore
CyclicBarrier
CopyOnWriteArrayList
ReentrantLock

The correct answer is: CyclicBarrier

The correct class to use instead of CountDownLatch to reset the count is CyclicBarrier. While ReentrantLock could also be used in certain cases, it is primarily used for providing mutual exclusion between threads. Semaphore and CopyOnWriteArrayList, while they could potentially be used to reset a count, are more commonly used for other purposes such as limiting access to a shared resource and providing thread-safe access to a list, respectively. Thus, B is the most appropriate answer as CyclicBarrier is specifically designed for synchronizing a group of threads and resetting the count as needed.