developerWorks: Create, Deploy, and Debug Apache Geronimo Applications

“Many developers are attracted to the Eclipse platform because
its core capability can be extended by additional features. Eclipse
provides a well-defined mechanism for this extension ability. Every
aspect of Eclipse is contained in a plug-in, and plug-ins can
dynamically extend other plug-ins, as well as define extension
points that allow other plug-ins to extend them. The plug-in itself
defines the type of function that can be provided via these
extensions, and not the basic Eclipse infrastructure. For example,
the extension can be as simple as a new entry in a pop-up menu, or
as comprehensive as a completely new type of project, or a series
of editors and views…”

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