A filter is an object that is invoked at the preprocessing and postprocessing of a request. It is mainly used to

Events are basically occurrence of something. Changing the state of an object is known as an event. We can

We can bind the objects on HttpSession instance and get the objects by using setAttribute and getAttribute methods. In

In such case, container creates a session id for each user.The container uses this id to identify the particular

In URL rewriting, we append a token or identifier to the URL of the next Servlet or the next

In case of Hidden Form Field a hidden (invisible) textfield is used for maintaining the state of an user. In such

A cookie is a kind of information that is stored at client side. In the previous page, we learned a lot

An object of ServletConfig is created by the web container for each servlet. This object can be used to

An object of ServletContext is created by the web container at time of deploying the project. This object can

An attribute in servlet is an object that can be set, get or removed from one of the following scopes: request