Chapter 21. JFC and the Swing Package
In Chapter 19, we saw that the basic idea behind Java GUI programs is that you:
Declare controls. You can subclass them to add to the behavior, but this is often unnecessary.
Implement an interface to get the event-handler that responds to control activity.
Add the controls to a container. Again, subclassing is possible but frequently unnecessary.
That chapter explained how to handle the events that controls generate. This chapter dives ...