In this excerpt from Java Portlets 101, author Sunil Patil explains how portlets can include markup generated by servlets or JSPs, as well as how to dispatch requests to JSPs for actual markup generation and how to dispatch requests to servlets. He also discusses how to use various tags defined in the portlet tag library, using servlets to display images in a portlet, and restrictions on markup generated by a portlet.
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Sunil Patil has worked on J2EE technologies for more than five years. His areas of interest include object relational mapping tools, UI frameworks, and portals.