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

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Prepare for your Java exam with our ultimate quiz based on 'Thinking in Java'. Engage with expertly crafted questions that enhance your learning process. Perfect for Java enthusiasts looking to solidify their knowledge!

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 classes or interfaces are essential to create a null proxy object as demonstrated?

NullRobot, NullRobotProxyHandler, Null, and Robot
Proxy, Method, and InvocationHandler
NRobot, Null, and Robot
NullRobot, NRobot, and Proxy

The correct answer is: Proxy, Method, and InvocationHandler

When creating a null proxy object, the essential classes and interfaces are Proxy, Method, and InvocationHandler. Option A is incorrect because the classes NullRobot, NullRobotProxyHandler, Null, and Robot are not necessary to create a null proxy object. Option C is also incorrect because it includes the non-existent class NRobot. Option D is incorrect because it includes both NullRobot and NRobot which are not necessary for creating a null proxy object.