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 a final field mean in the context of Java objects?

To improve performance
To prevent it from being subclassed
To make all methods static
To make the class abstract

The correct answer is: To improve performance

It is not correct to make a Java class final just to improve performance, as performance is not affected by it being a final class. Similarly, it is not necessary to make all methods static just to make the class final. Making the class abstract would prevent it from being instantiated, but it would still be possible to create subclasses. The correct reason for making a Java class final is to prevent it from being subclassed, which may be necessary if the class is not designed to be extended or modified by other developers.