@m455 that's basically all you need to know for this tbh!
i was mostly wondering because sun classes are usually (if not always) internal implementation details for java itself rather than any exposed api you are supposed to use
plus sun doesn't exist anymore! meaning all of those classes are legacy implementation details that will disappear eventually
@m455 actually, did you want to know more about java classes? because i could show you what they're all about at some point if you'd like!
clojure stands on its own, of course--so it's not required info or anything
but knowing some java concepts can actually be super-handy for going deeper than clojure apis themselves~ (it also makes embedding clojure into non-clojure projects extremely nice)