Answer Posted / rajib

import javax.servelet.*;
public MyServelet extends HttpServelet{
public void doGet(HttpServeletRequest
req,HttpServeletResponse res)throws ServletException,IO
Exception{
res.setContentType("text/html");
PrintWriter out=res.getPrintWriter();
out.println("for trac session0");
HttpSession sess=req.getSession();
if(sess==null){
out.println(Old session not exist );
}else{
HttpSession session=request.getSession(true);
out.println("new Session Created.");
}}

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