Mastering Java 2026 – 400 Free Practice Questions to Pass the 'Thinking in Java' Exam

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In the provided code, how is a new Robot object created that behaves as a null object?

Using standard Java reflection

By directly calling constructors

By using a Proxy combined with an InvocationHandler

Using standard Java reflection (A) and directly calling constructors (B) are both methods commonly used to create new objects in Java, but neither of these methods would result in a null object. A Proxy combined with an InvocationHandler is a design pattern that allows for the creation of a null object, where all method calls on the object will have no effect or return null. Method overloading in the Robot interface (D) would not result in the creation of a new object at all.

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Through method overloading in the Robot interface

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