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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What is CountDownLatch used for?

Data manipulation
Thread synchronization
File handling
Networking operations

The correct answer is: Thread synchronization

CountDownLatch is a class in Java that allows threads to synchronize their actions. It is commonly used in applications where multiple threads need to wait for a particular task to complete before proceeding. Options A, C, and D are incorrect because they do not involve synchronization between threads. Data manipulation involves processing and altering data, file handling involves reading and writing files, and networking operations involve communication between systems. While these may be related to overall application functionality, they do not directly involve thread synchronization, which is the main purpose of CountDownLatch.