Provides the ability to enumerate over all classes in the classpath and filter those enumerations.

The main interface for enumerating classes is the {@link com.samskivert.viztool.enum.ClassEnumerator}. It scans through the class path and attempts to match a component enumerator to each component. The {@link com.samskivert.viztool.enum.DirectoryEnumerator} is used for all components that don't match one of the other (zip or jar) enumerators. These component enumerators are then used in turn to enumerate through all of the classes in the class path.

The enumeration can be filtered by making use of a {@link com.samskivert.viztool.enum.FilterEnumerator}.