creation: 3/24/99 (using AWT), major revision: 01/06/02 (using Swing)
Most GUI programs are created by extending the class
JFrame
.
The JFrame
class holds the basic GUI
functionality.
You extend this class by adding the
functions your application needs.
This chapter introduces these ideas.
It may be helpful at times to refer back to the class hierarchy diagrams of the previous chapter.