Discover From This Page & Topic: [Discover] development
[Discover] WebSphere Portal Family wiki http://www-10.lotus.com/ldd/portalwiki.nsf/dx/sample-code-for-portlet-model-spi
(ibm development developerworks portal) 
[Discover] Java Examples from The Java Developers Almanac 1.4 http://www.exampledepot.com/ (java programming examples tutorial)
[Discover] XWiki - Community - DevelopmentPractices http://dev.xwiki.org/xwiki/bin/view/Community/DevelopmentPractices (practice development xwiki)