多项选择题

Whichtwoaretrue？（）……

Which two are true？（）

A. The prefix ‘java’ is reserved.
B. The URI ‘myTags’ must be properly mapped to a TLD file by the web container.
C. A translation error occurs because the prefix is considered identical by the web container.
D. For the tag usage ， the tag1 must be unique in the union of tag names in ‘myTags’ and ‘moreTags

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单项选择题To implement the design intent， which statement must be inserted at line 42？（）

A. session = response.getSession（）；
B. session = request.getSession（）；
C. session = request.getSession（true）；
D. session = request.getSession（false）；
E. session = request.getSession（“jsessionid”）；

多项选择题Giventhatascopedattributecartexistsonlyinauser’ssession，whichtwo，takenindependently，ensurethescopedattributecartnolongerexists？（）

A. ${cart = null}
B. <c：remove var="cart" />
C. <c：remove var="${cart}" />
D. <c：remove var="cart" scope="session" />
E. <c：remove scope="session">cart</c：remove>
F. <c：remove var="${cart}" scope="session" />
G. <c：remove scope="session">${cart}</c：remove>

单项选择题Which option prevents the exception thrown by my：errorProne from invoking the error page mechanism and outputs the message File not found in the response？（）

A.A
B.B
C.C
D.D
E.E

单项选择题Whichinterfacemustaclassimplementsothatinstancesoftheclassarenotifiedafteranyobjectisaddedtoasession？（）

A. javax.servlet.http.HttpSessionListener
B. javax.servlet.http.HttpSessionValueListener
C. javax.servlet.http.HttpSessionBindingListener
D. javax.servlet.http.HttpSessionAttributeListener

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