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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Which SWT class or interface ensures that CBox recreates its color at a set interval?

  1. Timer

  2. Runnable

  3. ScheduledExecutorService

  4. Display.timerExec

The correct answer is: Runnable

The class or interface that ensures that CBox recreates its color at a set interval is Runnable. This is because Runnable contains the necessary functionality to execute code repeatedly at a set interval. Options A, C, and D are incorrect because Timer, ScheduledExecutorService, and Display.timerExec do not have the same functionality as Runnable and are not specifically designed for this task.