Can anyone give me a clear example that how can i make use the session ?

Can anyone pls kindly tell me how can use the session to store the input from one JSP page and use it into another page? I had tried it but it doesn't work? It give me the null value for the session variable on second page....and can anyone one explain the meaning of those "request.getParameter()","session.setAttribute"?

In short, request.getParameter() gets parameters set through HTTP request. This information is passed from client to server once and does not persist.
Servlet/JSP containers allow you to create a session for each different connected user. Session (HttpSession) is maintained by the container and accepts attributes. When you say session.setAttribute("myAttr", myObject); you are storing myObject value under myAttr key in the session. This session object may persist among HTTP calls. Hence calling session.getAttribute("myAttr"); you get myObject within the same 'session'.
See: http://java.sun.com/webservices/docs/1.0/tutorial/index.html

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