Java Class Navigator is a navigable database of Java classes and applications. Tables are hierarchial and offer links both to original Sun documentation and to NPAC information pages (which will be more application/education focused, e.q. which applets are suitable for which educational tools, which Java classes are required for various interactive functions, what is the complexitiy involved etc.) Basically a friendly tool to survive and succeed in the huge volume of Java source code.
The NII is expected to make major impact on education both at the K-12, and University level.