“notice” an event (and react to it), Java requires you to do which of the following things?

I. define your own “handler” class that implements the appropriate Java-provided listener interface


II. define your own “handler” class that extends the appropriate Java-provided adapter class


III. construct an object of your “handler” class


IV. add your handler object to the list of listeners Java maintains





A. Either I or II, and III and IV


B. I, II, III and IV


C. II and III only


D. I and III only


E. Either I or II, and IV only

“notice” an event (and react to it), Java requires you to do which of the following things?
The answer would appear to be A according to http://java.sun.com/docs/books/tutorial/...