The major difference between Servlet config and Servlet Context' s are:
1. Servlet Config is one per each servlet. Servlet Context is one per Entire application .
2. Servlet Config having local scope respective to Servlet. Servlet Context having application scope.
3. Servlet Config is one per servlet so we can mention initialization parameters in inside <Servlet> tag of web.xml
Servlet Context one per application and it is not related to specific servlet so it is mentioned out side <Servlet> tag.
4. getServletContext() and get ServletConfig() used to get context and config objects.
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