Servlet Attributes

Servlet attributes are used for inter-servlet communication, we can set, get and remove
attributes in web application. There are three scopes for servlet attributes – request
scope, session scope and application scope.ServletRequest, HttpSession and ServletContext
interfaces provide methods to get/set/remove attributes from request, session and application
 scope respectively. Servlet attributes are different from init parameters defined in web.xml
 for ServletConfig or ServletContext.