CHAPTER 59 --- Example GUI Application

The three parts of a GUI application are:

1. Components that make up the Graphical User Interface.
2. Listeners that receive the events and respond to them.
3. Application code that does useful work for the user. <---- finally we'll do this, at least a little

In this chapter we will create a simple application that involves all three GUI parts.

Chapter Topics:

• The TextField GUI Component.
• The setText() and getText() methods of TextField.
• The Label GUI Component.
• Using ActionListener for a TextField's event.
• Example program: text echo program.
• The setEditable() method of TextField.

QUESTION 1:

(Review: ) Say that you have just finished your GUI application. You compile it and start it running. You click on a button in the GUI and..... nothing happens. What might be wrong?