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

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.