Answer to Question #231576 in Java | JSP | JSF for keowownfo

Question

Why should we use event adapter class instead of event listener? Explain the following java terms- i) Event (ii) Listener (iii) Adapter iv) Action Listener

Answer 1

a. Event adapter classes are used to implement listener interfaces.

b. i) Event: An event is the changing state of an object. Such as click of a button.

ii) Listener : A  Listener  is a method called when a user does something.

iii) Adapter: is a structural design patter which allows objects that are incompatible to collaborate.

iv)Action Listener: is responsible for handling all action events.