/* if the servlet tries to access a resource and finds out that the client is not authorized to access it - "401 Unauthorized" */
response.sendError(401,"You are not authorized to view the requested component");
/* if the servlet tries to access a resource that is forbidden for this client and there is no further information on it - "403 Forbidden" */
//response.sendError(403);
/* if the servlet tries to access a resource that is not found given the client's provided URL - "404 Not Found" */
//response.sendError(404);