Java Code Examples

Custom Components

• CustomLabel
  This class implements a label control by subclassing Canvas. On some virtual machines, changing the color of labels doesn't work. Using this class instead of Label does work.
• Tiled Panel
  This is a panel that draws a tiled image in its background.

Event Handling Examples

• KeyEventPoster
  This class contains static convenience methods simulate key strokes to an arbitrary component. It requires Java 1.1 or later.
• Tab Capturing Canvas
  This is an example of a custom Component that can be tabbed into, but not out of. It works by consuming key events for tab.
• MainFrame
  This is an example of a Frame that exits the application when it is asked to close itself. Applications that want that behavior for their main frame can define a subclass of this class.

Layout Managers

• StackLayout
  A simple layout that stacks components vertically, making each one as wide as the widest component in the Container.
• TreeLayout
  This layout arranges Components in a tree-like organization and draws lines between them.

Data Structures

• Queue
  A class that implements a Queue data structure.
  Requires java 1.1 or later.

Internal Security

• A Simple SecurityManager
  Here is a simple example of how to write and use a SecurityManager to enforce a security policy.