Returns a RequestDispatcher object that acts as a wrapper for the resource located at the given path.
RequestDispatcher dispatch = request.getRequestDispatcher("/tes");
Here "/tes" represents the url-pattern element value of the servlet class.
It represents the path of the servlet class. Since both the base as well as target servlet are in the same package structure by just specifying the url-pattern element value we will be able to access the target servlet.
To forward a request to a JSP page we use
RequestDispatcher dispatch = request.getRequestDispatcher("/TestJspOne.jsp");
Here "/TestJspOne.jsp" the slash denotes the Jsp page is at the root of the application.
Returns a RequestDispatcher object that acts as a wrapper for the named servlet.
getNamedDispatcher(String) method takes the name of the Servlet as parameter which is declared via Deployment descriptor. Example: Deployment Descriptor
RequestDispatcher dispatch = request.getNamedDispatcher(?FirstServlet?);