Answer Posted / farhaananwar

application and object of ServletContext are same. In jsp
page application implicit variable represents object of
ServletContext but pageContext represent object whose super
class is SerlvetContext. the class of PageContext has some
conviniant methods for manipulation of attributes of
different scopes. These methods are findAttribute, get/set/
removeAttribute that accept last parameter as a int value
representing scope to which attribute pass to methods
belongs.
The PageContext has integral contant value for showing
scopes which are PAGE_SCOPE, REQUEST_SCOPE, SESSION_SCOPE
and APPLICATION_SCOPE. These constant values are used as a
last arguement to set/get/removeAttribute methods to
indicate to which scope the attribute belong. such a methods
and consant values are not present in its super class
ServletContext.

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