Portlets are the building blocks of portal pages. Here you'll learn in more detail what portlets are, what technologies are available for building them, and how to build them declaratively as well as programmatically.
Portal Developer's Guide Learn more about portlet development and the options available to page designers and developers. Also review detailed information on building portlets using Web Clipping, OmniPortlet, Portlet Builder, Java, PL/SQL, and JSR 168 / WSRP. PDF version also available (4.5MB).