Posted by joconner
on June 7, 2007 at 1:28 PM PDT
The first of a brief series, this post summarizes the Swing Application Framework.
Two singleton classes help you manage your application:
ApplicationContext objects have a 1:1 relationship.
The ApplicationContext provides services to the Application. Those services include the following:
- localizable resource management
- task services and monitoring
- event action management
- session state storage
- basic local data storage
All framework applications must subclass either the
Application class or its
SingleFrameApplication subclass. The
Application class provides life cycle methods for launching the application, starting the user interface (UI), and shutting down.
SingleFrameApplication adds a default main GUI frame, retrieves and injects default resources, and uses the
ApplicationContext to save restore simple session state. Both superclasses provide an
ApplicationContext, but the
SingleFrameApplication class provides additional default behaviors that utilize the context.
You probably will not use
Application as your superclass. Most likely, the
SingleFrameApplication class provides the default behavior you need. In the future, other subclasses should be available to handle multi-frame applications as well. Regardless of the superclass, your application will use its
ApplicationContext singleton to access most services provided by the framework.
To check out the progress on JSR 296, download the framework from its Swing Application Framework Project home on java.net.