多项选择题
Assume session is an HttpSession， and is not referenced anywhere else in ServletA. Which two changes， taken together， ensure that value is equal to “Hello” on line 23？ （）
A.A B.B C.C D.D E.E
单项选择题 Given the HttpServlet code： getServletContext（）.setAttribute（“foo”， “value”）； What is the result？（）
单项选择题 Whichisthe true choiceaboutthewebcontainerrequestprocessingmodel（）？
多项选择题 Whichthe twoaretrueregardingawebapplicationclassloader？（）
Assume session is an HttpSession， and is not referenced anywhere else in ServletA. Which two changes， taken together， ensure that value is equal to “Hello” on line 23？ （）