How to retrieve request parameters ?

1. Retrieve single request parameter using ServletRequest' s getParameter()

Example

String name = req.getParameter("nameparam");

2. Retrieve more than one value for single parameter name using ServletRequst' s getParmeterValues()

Example

String[ ] names = req.getParameterValues("nameparam");

3. Retrieve all request parameters using ServletRequest' s getParmeterNames()

Example

Enumeration enum = req.getParameterNames();

while (enum.hasMoreElements()) {

   String name = (String) enum.nextElement();

   out.println("Parameter Name: " + name + 

               " Value: " + req.getParameter(name));

}