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 method in NullRobotProxyHandler is responsible for delegating calls to the proxied object?

newNullRobot
invoke
operations
None, as delegation is handled automatically by Java

The correct answer is: invoke

The method newNullRobot is used to create a new instance of NullRobotProxyHandler, and not specifically for delegating calls. The operations method returns an array of the available proxy methods, but does not specify how the calls are delegated. Option D is incorrect as Java does not automatically handle the delegation of calls to proxied objects. Therefore, the correct answer is option B - invoke. This method takes in the object that is being called, and the method being called, and uses reflection to invoke the call on the original object.