SASAX-RSS is the parser implementation for RSS(RDF Site Summary) XML document on SASAX Framework. It also includes sample GUI implementation.

http://www.lares.dti.ne.jp/~foozy/fujiguruma/sasax-rss/

It only understands RSS core syntax, but you can extend it for another "module"(e.g.: "Dublin Core" or "Syndication") easily. Please see "Implementation note" in documents

I hope that it helps you both to parse RSS XML document and to understand SASAX.