Feel free to update any broken links and to add any new ones at the bottom of the list.
Java Idioms
http://c2.com/cgi/wiki?JavaIdioms
Java language specific idioms on the Portland Pattern Repository's Wiki Web
Design Patterns
http://www.amazon.com/exec/obidos/ISBN=0201633612/7090-3829019-778819
Elements of Reusable Object-Oriented Software, by the Gang Of Four.
Analysis Patterns : Reusable Object Models
http://www.amazon.com/exec/obidos/ISBN=0201895420/1208-8590461-305546
Martin Fowler talks about Knowlege Level and Role patterns, among other goodies.
Data Model Patterns : Conventions of Thought
http://www.amazon.com/exec/obidos/ISBN=0932633293/1208-8590461-305546
David Hay discusses common corporate relational database patterns.
Pattern-Oriented Software Architecture: A System of Patterns
http://www.amazon.com/exec/obidos/ISBN=0471958697/3200-0883356-132149
by Frank Buschmann et. al. This is the best book on software patterns I've read since GOF.
--BillRehm
Patterns Home Page
http://hillside.net/patterns/patterns.html
--DmitryBisikalo (Jul 10 98)
Other Readings