Mastering Java: The Ultimate Quiz for 'Thinking in Java'

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Mastering Java: The Ultimate Quiz for 'Thinking in Java'. Dive deep into Java with multiple-choice questions. Challenge yourself with quiz questions designed to test and improve your understanding of the 'Thinking in Java' book. Get ready for your exam!

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How can one get a null Robot object according to the text?

  1. By instantiating NullRobot directly

  2. Using newNullRobot method and passing the type

  3. Calling a constructor of NullRobotProxyHandler

  4. Through a specialized factory method not mentioned in the text

The correct answer is: Using newNullRobot method and passing the type

It is incorrect to instantiate NullRobot directly as there are no constructors mentioned in the text. Similarly, calling a constructor of NullRobotProxyHandler is incorrect as there is no mention of this class in the text. Option D is also incorrect as the text does not mention any factory methods. Option B is the correct answer as the text specifically mentions using the newNullRobot method and passing the type in order to get a null Robot object.

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