The common navigator is a JFace
TreeView component that has extension points for displaying arbitrary types of objects. Instead of having to write content and label providers for all sorts of different objects, the common navigator provides a tree view that allows plug-ins to contribute different renderers based on the type of object in the tree.
The common navigator is used by the Project Explorer view in Eclipse and is used to show the graphics and labels for the packages, classes, and their methods and fields, as shown in the following screenshot. It is also used in the enterprise Java plug-in to provide Servlet and context-related information.
None of the resources shown in the screenshot of the Project Explorer view exist as ...