Good sites on patterns / frameworks / APIs

[seshu kumar]

I'm looking for good sites with comprehensive content on Core Java. Specifically I'm looking for patterns / Frameworks / API development etc.
Serverside.com covers mostly distributed and server side stuff really.
I'm looking at core java swing applications, doing some heavy duty stuff.

[Vijayakumar Arya]

Hi,
After a google search for Java Design Patterns I found this site very informative
URL
http://www.javaworld.com/columns/jw-java-design-patterns-index.shtml
Please do a google search and keep on posting the URLs when you come across any good site.
---------------
vijay.

[laxmikant shimpi]

hi Guys,
this is the best site as this gives all the information about all design patterns as well as gives insight of the Patterns concept.

http://www.hillside.net/patterns/
also http://www.apache.org also provides very good insights ...

Hope this helps.
Regards,
Laxmikant

[Steve Luke]

o'course, Sun's API is all inclusive of the CORE Java classes. Really the only place I go looking for API
http://java.sun.com/j2se/1.4.1/docs/api/