Abstract
The goal of the JDesktop Network Components (JDNC) project is to significantly reduce the effort and expertise required to build rich, data-centric, Java desktop clients for J2EE-based network services. These clients are representative of what enterprise developers typically build, such as SQL database frontends, forms-based workflow, data visualization applications, and the like.
JDNC leverages the power of J2SE and Swing while providing a higher level API, as well as an optional XML markup language, which enables common user-interface functionality to be constructed more quickly, without requiring extensive Swing or GUI programming skill. Additionally, JDNC simplifies the task of connecting a rich client to a J2EE backend, including JDBC and WebServices.
Recognizing the broad range of developer skill-sets and predilections, JDNC has been constructed in 3 distinct layers that can be used independently or together. These layers are reflected as JDNC sub-projects so that each can evolve at its own pace. From bottom to top:
- Swing Extensions: APIs which extend Swing to provide key features required by data-centric applications (sorting, filtering, data-binding, asynchronous data-loading, etc); makes life easier for Swing developers. The APIs are defined in the org.jdesktop.swing package.
- JDNC API: Higher level Swing based components that leverage the Swing Extensions, but provide a simplified JavaBeans API for common functions, provide attractive default visuals, usability features, and data-binding out of the box; usable by developers who may not know Swing. These component APIs are contained in the org.jdesktop.jdnc package.
- JDNC Markup Language: A simple, extensible XML-based markup language that enables developers to configure JDNC based clients using XML and deploy them either as Java Web Start applications or as applets in a standard browser. The XML markup language is specified using a Schema (.xsd) and the tag library API used to implement the schema is defined in the org.jdesktop.jdnc.markup package.
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