Just Java™ 2, Fifth Edition

Chapter 19. GUI Basics and Event-Handling

• All About Event-Handling

• Tips for Slimming Down Handler Code

• Summary of Event-Handling

• Exercises

• Some Light Relief—The Mouse That Roared

All GUI libraries have four basic areas of functionality:

• Creation of user interface “controls” or components such as scrollbars, buttons, and labels.

• Support for giving behavior to the controls by tying GUI events (like clicking on a button) to code that you write.

• Support for grouping and arranging the controls on the screen.

• Support for accessing window manager facilities like specifying which window has the input focus, reading JPEG and other image files, and printing.

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