Michael,
HttpServletRequest parameters can not be set. They can only be got.
That statement is not entirely true. You are partially right because we cannot set request parameters within a jsp/servlet with a call like request.setParameter(name, value). However, when we include/forward a page in JSP we can set addtional request parameters. For eg:
Now test1.jsp can retrieve this parameter with request.getParameter("temp"). The container is responsible for passing these run time parameters to the included/forwarded page. It usually appends them as query
string to the URL and includes/forwards to the specified page.
Ciao,
GSS
SCJP, SCJD, SCWCD 1.3, SCWCD 1.4, SCBCD