ArcGIS 9.3.1 is coming soon to a mailbox near you! See What's New and Migrating to 9.3.1 for more information.
The Web Application Developer Framework (ADF) for the Java Platform provides a set of AJAX-enabled controls that work with geographic data sources. These controls are JavaServer Faces (JSF) components that include both server side and client side controls and libraries. By using the JSF framework, you can leverage the JSF components from ESRI and other vendors to quickly build interactive Web-based applications that can display, analyze, and edit GIS data stored on a central server.
If you are just getting started, you can learn about using the Java Web ADF to create a map or task.
You can also take a look at the samples. Many samples are available that show some aspect of the Java Web ADF.
The Library Reference is also available if you need more information about each object and its properties, methods, and events.
