Can an anonymous class extend a class and implement an interface simultaneously?

• A. Yes, always
• B. No, it cannot extend a class and implement an interface at the same time
• C. Yes, but it requires additional declarations
• D. No, but it can do one or the other

Answer: (B)

An anonymous class in Java can indeed extend a class and implement an interface simultaneously. The correct understanding is that while it can extend a superclass, it can also implement one or more interfaces in the same declaration. This allows the anonymous class to inherit methods and properties from the superclass while also adhering to the contracts defined by the interfaces.

For example, if you declare an anonymous class that extends a class, you can also specify that it implements an interface by adding the required interface after the superclass in the declaration.

Thus, the assertion that an anonymous class cannot extend a class and implement an interface at the same time is not accurate. In practice, anonymous classes are versatile and designed to allow such flexibility, enabling them to inherit functionality and provide additional implementations as needed.