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

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Want to excel in Java? Test your knowledge with our ultimate quiz based on 'Thinking in Java'. Engage with multiple-choice questions and in-depth explanations. Boost your understanding and prepare for your exam with confidence.

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What is the purpose of using a proxy for a null Robot object?

To allow dynamic method invocation
To prevent NullPointerExceptions
To provide specific behavior for 'null' robot types
To log access to null objects for debugging

The correct answer is: To provide specific behavior for 'null' robot types

When a proxy is used for a null Robot object, this allows for specific behavior to be defined for 'null' robot types. This is a more efficient and organized approach compared to allowing the object to throw an exception or returning a null value. Option A is incorrect because the purpose of using a proxy in this scenario is not related to dynamic method invocation. Option B is incorrect because a proxy may still throw a NullPointerException if not properly implemented. Option D is incorrect because logging access to null objects is not the primary purpose of using a proxy for a null Robot object.