Category: J2EE Category

The getRequestDispatcher(String path) method of javax.servlet.ServletRequest interface accepts parameter the path to the resource to be included or forwarded to, which can be relative to the request of the calling servlet. If the path...

The javax.servlet.Servlet interface defines the three methods known as life-cycle method. public void init(ServletConfig config) throws ServletException public void service( ServletRequest req, ServletResponse res) throws ServletException, IOException public void destroy() First the servlet is...

ServletContext: Defines a set of methods that a servlet uses to communicate with its servlet container, for example, to get the MIME type of a file, dispatch requests, or write to a log file....

A GenericServlet has a service() method aimed to handle requests. HttpServlet extends GenericServlet and adds support for doGet(), doPost(), doHead() methods (HTTP 1.0) plus doPut(), doOptions(), doDelete(), doTrace() methods (HTTP 1.1). Both these classes...

forward Control can be forward to resources available within the server from where the call is made. This transfer of control is done by the container internally and browser / client is not involved....

A doGet() method is limited with 2k of data to be sent, and doPost() method doesn’t have this limitation. A request string for doGet() looks like the following: http://www.javaskool.com/servlet123?p1=v1&p2=v2&…&pN=vN doPost() method call doesn’t need...

A container does not initialize the servlets ass 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...

ServletContext interface is a window for a servlet to view it’s environment. A servlet can use this interface to get information such as initialization parameters for the web applicationor servlet container’s version. Every web...