If a method is declared as protected, where may it be accessed?

• A. Only within the same class
• B. By any class in the application
• C. Classes in the same package and subclasses
• D. Only by subclasses in other packages

Answer: (C)

A method declared as protected can be accessed by classes within the same package as well as by subclasses, regardless of whether those subclasses are in the same package or in different packages. This access level provides a balance between encapsulation and flexibility, allowing subclasses to utilize the protected methods while still restricting access from unrelated classes outside of the package. By design, protected allows for broader access than private, which is limited to the class itself, but less than public, which is open to all classes.

An understanding of protected helps in designing class hierarchies where certain methods can be shared among related classes while keeping them hidden from the wider application context. This promotes code reuse and allows the implementation details to be hidden, adhering to the principles of object-oriented programming.