In the org.ofbiz.base.util package there are interfaces and classes that don't really belong there - they are data types, not utility classes. It would be nice if we could create a new package to contain basic data types: org.ofbiz.base.types. The new package would contain things like: Appender, DateRange, Factory, Range, ComparableRange, TimeDuration, etc.
The org.ofbiz.base.util package could be (informally) limited to classes that follow the utility class pattern (only static methods, private constructor, etc). What do you think? -Adrian