单项选择题
What is the result？（）
A. foo has the value”” B. foo has the value null. C. An exception is thrown. D. The code will not compile.
单项选择题 Whichthe statementistrue？（）
单项选择题 Which code snippet inserted at line 12 cause the client to redirect tohttp：//www.example.com？（）
单项选择题 GivenanHttpSessionsession.AServletRequestrequest.AndaServletContextcontext.WhichretrievesaURLto/WEBINF/myconfig.xmlwithinawebapplication？（）
