public class DataCacheViewer
The DataCacheViewer is a tool that allows the user to view and delete cached WorldWind files based on how old they
are. The utility shows the various directories in the cache root, how large they each are, when they were last used,
and how many files exist in them that are older than a day, week, month or year. It also allows the user to delete
all files older than a specified number of days, weeks, months or years.