单项选择题

GiventheHttpServletcode：getServletContext（）.setAttribute（“foo”，“value”）；Whatistheresult？（）

A.Theattributefooisplacedintheapplication
B.AServletContextListenerregisteredforthatservletisnotified
C.AServletAttributeListenerregisteredforthatservletisnotified
D.AnHttpSessionAttributeListenerregisteredforthatservletisnotified

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单项选择题

AwebapplicationusestheHttpSessionmechanismtodetermineifauserisloggedin”.Whenausersuppliesavalidusernameandpassword，anHttpSessioniscreatedforthatuser.Theuserhasaccesstotheapplicationforonly15minutesafterloggingin.Thecodemustdeterminehowlongtheuserhasbeenloggedin，andifthistimeisgreaterthan15minutes，mustdestroytheHttpSession.WhichmethodinHttpSessionisusedtoaccomplishthis？（）
A.getCreationTime
B.invalidateAfter
C.getLastAccessedTime
D.getMaxInactiveInterval

A.Whenausersuppliesavalidusernameandpassword，anHttpSessioniscreatedforthatuser.Theuserhasaccesstotheapplicationforonly15minutesafterloggingin.Thecodemustdeterminehowlongtheuserhasbeenloggedin，andifthistimeisgreaterthan15minutes，mustdestroytheHttpSession.WhichmethodinHttpSessionisusedtoaccomplishthis？（）
A.getCreationTime
B.invalidateAfter
C.getLastAccessedTime
D.getMaxInactiveInterval

单项选择题

GivenaJSPerrorpage，whichimplicitobjectreferstotheuncaughtThrowablethatresultedinthepagebeinginvoked？（）

A.Error
B.Exception
C.Throwable
D.Requesterror
E.Requestexception