CHAPTER 58 — Adding Buttons to a Frame

The previous chapters have introduced event-driven programing and the three parts of a GUI application:

1. The Graphical User Interface:
   • Container objects--JFrame
   • Other objects--buttons, text fields, others.
2. Listener methods:
   • Each GUI object has a listener object registered for it for each type of event it generates for which a response is expected.
3. Application code.
• The purpose of the program.

This chapter discusses how to add button components to a frame and how to register a listener for button events.

Chapter Topics:

• Adding buttons to a frame.
• Layout managers.
• Action listeners.
• Registering a listener with a GUI component.
• Changing the background color of a frame.
• actionPerformed() method
• Using actionPerformed() with several buttons.