Servlet Archive
A filter is an object that is used to perform filtering tasks such as conversion, log maintain, compression, encryption and decryption, input validation etc. A filter is invoked at the preprocessing and postprocessing of a …
Following answer is applicable irrespective of the language and platform used. Before we enter into session tracking, following things should be understood. What is a session? A session is a conversation between the server and …
To send cookies to the client, a servlet should create one or more cookies with designated names and values with new Cookie(name, value), set any optional attributes with cookie.setXxx (readable later by cookie.getXxx),and insert the …
An object of ServletContext is created by the web container at time of deploying the project. This object can be used to get configuration information from web.xml file. There is only one ServletContext object per …
ServletConfig is implemented by the servlet container to initialize a single servlet using init(). That is, you can pass initialization parameters to the servlet using the web.xml deployment descriptor. For understanding, this is similar to …
The sendRedirect() method of HttpServletResponse interface can be used to redirect response to another resource, it may be servlet, jsp or html file.It accepts relative as well as absolute URL. It works at client side …
The HttpSession object represents a user session. A user session contains information about the user across multiple HTTP requests.When a user enters your site for the first time, the user is given a unique ID …
