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!

Practice this question and more.

In context of concurrency, what does 'volatile' keyword signify for a variable?

The variable can change spontaneously
The value of the variable will never change
The variable is shared across multiple threads
None of the above

The correct answer is: The variable is shared across multiple threads

In the context of concurrency, 'volatile' is used to indicate that a variable may be accessed and modified by multiple threads at the same time. This means that the value of the variable may change unpredictably due to concurrent operations, and the compiler should not make any assumptions about its value. Option A is incorrect because 'volatile' does not necessarily mean the variable will change spontaneously, but rather that it can be accessed and modified by multiple threads at any time. Option B is also incorrect because the value of a volatile variable can indeed change. Option D, 'None of the above', is incorrect because option C is the correct answer.