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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How is concurrency mentioned in the context of AWT/Swing and SWT?

  1. SWT supports multiple threads updating the display

  2. AWT/Swing uses a multi-threaded rendering approach

  3. SWT throws an exception if you try to update the display from multiple threads

  4. AWT/Swing allows multiple threads to update the display without issues

The correct answer is: SWT throws an exception if you try to update the display from multiple threads

Thread safety is an important aspect in user interface frameworks such as AWT/Swing and SWT. This means that only one thread should be responsible for updating and manipulating the components on the screen at a time. Option A is incorrect because while SWT does support multiple threads, it still requires proper synchronization to update the display. Option B is incorrect because AWT/Swing actually uses a single-threaded rendering approach. Option D is incorrect because it is actually not recommended to have multiple threads updating the display in AWT/Swing as it can lead to unexpected behavior and potential race conditions. Option C is the correct answer because SWT explicitly throws an exception to prevent multiple threads from updating the display at the same time, ensuring thread safety.