Any Questions?

Brief Review

More Examples of Using the Package awt (awt = Abstract Windowing Toolkit) for creating GUIs

• Example 1: Using canvases to make custom components -- traffic lights.

• Example 1.1: A changeable traffic light.

• Example 2: Thermometers.

• Layout managers
  • BorderLayout -- the default mgr for the classes Window, Dialog, and Frame
  • FlowLayout -- the default for Panel and Applet classes
  • GridLayout -- creates a rectangular grid of components of uniform size
  • GridBagLayout -- also divides the container into a grid but in a much more flexible way than GridLayout
  • CardLayout -- like a deck of cards with only the top component visible

Related material from the textbooks

• The Java 1.1 Developer's Handbook, chapter on "Creating Custom Components" (first part), pp. 41-70 is relevant to examples 1, 1.1, and 2. There is a nice section on event handling, pp. 45-50. Note, however, that this chapter (as well as our examples) still use the event handling mechanisms of JDK 1.0.

• Developer's Handbook, Chapter 4, "Layout Managers," pp. 106-181 but especially pages 106-131. This is the best description of layout managers and their use that I have seen.

• Late Night Advanced Java, chapter 6. Corrected programs for most of the examples can be found in chapter 6: corrected examples.