Your web site has many user-customizable features, for example font and color preferences on web pages. Your IT department has already built a subsystem for user preferences using Java SE's lang.util.prefs package APIs and you have been ordered to reuse this subsystem in your web application.You need to create an event listener that stores the user's Preference object when an HTTP session is created. Also, note that user identification information is stored in an HTTP cookie. Which partial listener class can accomplish this goal?

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A. public class UserPrefLoader implements HttpSessionListener

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B. public class UserPrefLoader implements SessionListener

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C. public class UserPrefLoader implements HttpSessionListener

Answer

D. public class UserPrefLoader implements SessionListener

Your web site has many user-customizable features, for example font and color preferences on web pages. Your IT department has already built a subsystem for user preferences using Java SE's…

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