A container does not initialize the servlets as soon as it starts up, it initializes a servlet when it receives a request for that servlet first time. This is called lazy loading. The servlet specification defines the element, which can be specified in the deployment descriptor to make the servlet container load and initialize the ...
Whenever there is a request from the client (or browser) to the server, the server container creates two objects 1. request 2. response and pass these objects to the servlet along with other parameters if needed. S.No. RequestDispatcher.forward HttpServletResponse.sendRedirect 1. the request is forwarded to other resource(say B) in the same context, B does some ...
Flushing means the data processed so far can go to the client even if the rest of the page isn’t done yet. It’s useful when you have a lot of data to send like in a download. flush=true : means send to client flush=false : means wait.
Attributes Parameters Types 1. Application/context 2. Request 3. Session 1. Application/context init parameters 2. Request parameters 3. Servlet init parameters Method to set setAttribute(String name, Object value) You CANNOT set Application and Servlet init parameters—they’re set in the DD, Return type Object String Method to get getAttribute(String name) return type of the method is Object getInitParameter(String name) ...