問題詳情

9 Which three are true about the HttpServletRequestWrapper class? (Choose three.)
(A) The HttpServletRequestWrapper is an example of the Decorator pattern.
(B) The HttpServletRequestWrapper can be used to extend the functionality of a servlet request.
(C) A subclass of HttpServletRequestWrapper CANNOT modify the behavior of the getReader method.
(D) An HttpServletRequestWrapper may be used only by a class implement the javax.servlet.Filterinterface.
(E) An HttpServletRequestWrapper CANNOT be used on the request passed to the RequestDispatcher.interface.(F) An HttpServletRequestWrapper may modify the header of a request within an objectimplementing the javax.servlet.Filter interface.

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