It defines a set of methods that a servlet uses to communicate with its servlet container.
These object is contained within the ServletConfig object.
Specifies the param-value pairs for ServletContext object in <context-param> tags in web.xml file.
These parameters are specified for an entire application outside of any particular servlet and
are available to all the servlets within that application.
It represents your web application,so there is only one sevletContext for your application
It provides access to resources and that resources are common to all the servlet
It is a servlet configuration object used by a servlet container used to pass information to a servlet during initialization.
All of its initialization parameters can ONLY be set in deployment descriptor.
These parameters are specified for a particular servlet and are unknown to other servlets.
For particular servlet in your application there is one ServletConfig
For read more information visit to :http://www.roseindia.net/servlets/ServletContext.shtmlhttp://www.roseindia.net/servlets/MethodsOfServlets.shtml