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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What library introduces new classes for concurrency problems in Java SE5?

  1. java.util

  2. java.util.concurrent

  3. java.io

  4. java.nio

The correct answer is: java.util.concurrent

The java.util.concurrent library was introduced in Java SE5 specifically to provide classes for concurrency problems. It contains a set of classes that help manage separate threads of execution that may have the potential to cause issues such as deadlocks and race conditions. Option A, java.util, is a library that provides data structures and utilities for handling collections, such as lists, queues, and maps. While it does include some concurrency-related classes, it was not specifically created to address concurrency problems, making it incorrect. Option C, java.io, is a library that provides classes for handling input and output operations, such as reading and writing files. It does not include any classes related to concurrency, making it incorrect. Option D, java.nio, is a library that provides an alternative to java.io for handling input and output operations. While it does include some classes for handling multiple threads, it was not

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