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.

What does the 'synchronized' keyword ensure?

The code runs synchronously
The method cannot be accessed by more than one thread at a time
Increases the speed of execution
None of the above

The correct answer is: The method cannot be accessed by more than one thread at a time

The 'synchronized' keyword does not ensure that the code runs synchronously, but rather it ensures that the method it is applied to cannot be accessed by more than one thread at a time. This means that only one thread can access the method at a given time, preventing any potential conflicts or errors caused by multiple threads accessing the same method simultaneously. Option C is incorrect because the 'synchronized' keyword does not increase the speed of execution, but can actually slow it down due to the need for threads to wait for access to the method. Option D is incorrect, as option B is the correct answer.