Question

Which of the following is true about the methods of a Java nonstatic inner class?

A. They can only access instance variables of the outer class
B. They can only access instance variables of the inner class
C. The can access instance variables of both the inner and outer class
D. The can only access class variables of the inner class

Answer 1

The methods of a nonstatic inner class in Java can access both the inner class's instance variables and the outer class's instance variables, providing them the capability to interact with the entire object's state.

Step-by-step explanation:

The true statement about the methods of a Java nonstatic inner class is C. They can access instance variables of both the inner and outer class. Nonstatic inner classes are associated with an instance of the outer class, which means they can access the instance variables and methods of the outer class directly. Additionally, since they are inner classes, they naturally have access to their own instance variables and methods.

An inner class in Java is defined within the scope of another class, and its instances are tied to instances of the outer class. This relationship allows inner class methods to interact with the state of the outer object seamlessly, which can be particularly useful for handling complex data structures or creating callbacks without polluting the outer class's namespace.