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J2EE Journal Authors: Zakia Bouachraoui, Douglas Lyon, Stackify Blog, APM Blog, Sumith Kumar Puri

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J2EE Journal: Article

Common Controls Enable J2EE With HTML Front-Ends

Recent Updates Result in Version 1.5.014

The Germany-based Common Controls (www.common-controls.com) has created a Java Presentation Framework based on Java Servlets, Java Serverpages (JSP) and Apache-based Struts. The Presentation Framework contains the most common control elements required to develop J2EE apps with HTML front-ends, such as lists, trees, tabfolders, menus and forms,.


Common Controls

The company says that these control elements distinguish themselves by automatically saving their own state across server roundtrips, so that the scrolling mechanism of a list, for example, or the explosion and folding of a tree structure do not have to be implemented independently. Rather, the state is managed by the control element itself, so that the developer can concentrate on the actual and important aspects of a Web application, such as the technical sequences or providing the data. The Framework takes over the presentation.

The configuration of a control element takes place within a JSP page with corresponding tags. If the layout of a control element is not fixed at the time of design, or if it defines itself dynamically, it can be set via its design model on the server side. Thus, columns of a table, for example, can be displayed or suppressed at runtime.

The control elements, however, are still flexible enough to be able to react to special requirements. They provide different template methods with which the standard behavior can be overwritten and specifically customized. The Common Controls work according to the strict separation between the presentation layer and the business logic. The most recent updates are posted on the company website, and are incorporated into the latest Version 1.0.014.

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