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.

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What output is produced when invoking operations on the proxied null object for SnowRemovalRobot?

  1. A list of operations performed by SnowRemovalRobot

  2. A NotSupportedException

  3. An empty list

  4. Detailed logging of each method call

The correct answer is: An empty list

A & D incorrect because they do not return anything and would just add an additional step. B is incorrect because even though the null object pattern throws a NotSupportedException, since it is a proxy, it would return the same output as the original SnowRemovalRobot which is an empty list.

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