To make a graphical user interface completely functional in a Java program, you must make the interface receptive to user events.
Swing handles events with a set of interfaces called event listeners. You create a listener object and associate it with the user interface component being monitored.
Today, you learn how to add listeners of all kinds to your Swing programs, including those that handle action events, mouse events, and other interaction.
When you’re finished, you create a full Java application using the Swing set of classes.
If a class wants to respond to a user event under the Java event-handling system, it must implement the interface that deals with the events. These interfaces are called ...