单项选择题
Which interface must a class implement so that instances of the class are notified after any object is added to a session？ （）
A. javax.servlet.http.HttpSessionListener
B. javax.servlet.http.HttpSessionValueListener
C. javax.servlet.http.HttpSessionBindingListener
D. javax.servlet.http.HttpSessionAttributeListener
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单项选择题
The tl：task tag supplies information about a single task while the tl：taskList tag does the final output. The tag handler for tl：taskList is TaskListTag. The tag handler for tl：task is TaskTag. Both tag handlers extend BodyTagSupport. Which allows the tl：taskList tag to get the task names from its nested tl：task children？（）
A.A
B.B
C.C
D.D
E.E -
多项选择题
Whichthreearevalidvaluesforthebody-contentattributeofatagdirectiveinatagfile？（）
A. EL
B. JSP
C. empty
D. dynamic
E. scriptless
F. tagdependent -
单项选择题
A developer is designing a web application that must support multiple interfaces， including： • an XML web service for B2B • HTML for web-based clients • WML for wireless customers Which design pattern provides a solution for this problem？()
A. Session Façade
B. Business Delegate
C. Data Access Object
D. Model-View-Controller
E. Chain of Responsibility
