In what cases are adapter classes useful?
A) When an adapter GUI control is clicked.
B) When every method in the event-listener interface is to use the same functionality.
C) When it is not desirable to declare every method in the event-listener interface.
D) None of the above.

Question

Quizplus · Accepted Answer

Adapter classes are useful because they allow a developer to implement only the methods they need from an interface, without having to provide empty implementations for all methods in the interface. This is particularly useful in event handling in GUI frameworks, where an interface may define multiple methods, but the developer only needs to use one or a few of them.

In What Cases Are Adapter Classes Useful