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A.Your filter class must implement an init method and a destroy method.
B.Your filter class must also implement javax.servlet.FilterChain.
C.When your filter chains to the next filter， it should pass the same arguments it received in its doFiltermethod.
D.The method that your filter invokes on the object it received that implements javax.servlet.FilterChaincan invoke either another filter or a servlet.
E.Your filter class must implement a doFilter method that takes， among other things， anHTTPServletRequest object and an HTTPServletResponse object.

A.Include a listener directive in a JSP page
B.configure a listener in the TLD file using the  element
C.Include a  element in the web application deployment descriptor
D.configure a listener in the application deployment descriptor， using the  element
E.Include a class implementing ServletContextListener as part of the web application deploymen