Pacakge of Java classes that provide common behaviour for dynamic web applications. Sample applications are available here.
Provides the following

• Display and process HTML forms to view and edit objects.
• Display and process HTML forms to search and list objects.
• Manage request context.
• Time display and conversion.
• Manage selection lists.
• Generate dynamic SQL.
• Read/write flat files.
• Access database connections and query management.
• Connection pools
• Generate HTML for calendars
• Generate HTML for bar graphs
• Data Access Objects
• Manage user access

The classes factor out much of the standard overhead of operations so that one may concentrate on the specifics.