use the portlet to create render or action URLs that point back to this portlet. (renderResponse.createActionURL()). The URL can accomodate a parameter that indicates what jsp to delegate to (renderURL.setParameter("jsp", "jsp1")
You can then set the stringified version of these URLs as request attributes, and request dispatch to a jsp . the jsp in turn can get the URLs back from the request attribute(s) and fill them in as the form action or a href ....
Can you please explain me with an example.I tried as you told but I am not able to go further.Plz. do help me by giving an exmple.