I am quite new to portlets.I have a JSP with me which i need to include in my portlet.But my JSP is from another website.It is hosted on the public domain.How do i actually do it.Any help would be greatly appreciated.TIA
You haven't said anything about the target environment - Portlet 1.0, 2.0 or vendor specific - or whether their are any restrictions on the local or remote servers.
Writing a portlet that converted a local request into a remote request and relayed the response shouldn't be hard.
Liferay also has a portlet which supplies a simple iFrame wrapper on a remote page and the portlet source may be available in the community edition. See liferay.com for details.