An event listener for a button must implement the ____ interface.
A) EventListener
B) ActionListener
C) ActionEvent
D) ActionPerformed

Question

Quizplus · Accepted Answer

An event listener for a button must implement the ActionListener interface. This is the interface that provides the method actionPerformed() which is invoked when the button is clicked. Option A is incorrect as EventListener is a general interface for receiving all event notifications, while ActionListener is specific to buttons. Option C is incorrect as ActionEvent is a class that represents a button being clicked, but it is not an interface that needs to be implemented. Option D is incorrect as ActionPerformed is not an interface. It is a method provided by ActionListener interface.

An Event Listener for a Button Must Implement the ____