單項(xiàng)選擇題

Given the JSP code：
<% request.setAttribute（"foo"， "bar"）； %>and the Classic tag handler code：
5. public int doStartTag（） throws JspException {
6. // insert code here
7. // return int
8. }
Assume there are no other "foo" attributes in the web application.
Which invocation on the pageContextobject，inserted at line 6，assigns "bar" to the variable x？（）

A.String x = （String） pageContext.getAttribute（"foo"）
B.String x = （String） pageContext.getRequestScope（"foo"）
C.It is NOT possible to access the pageContext object from within doStartTag
D.String x = （String） pageContext.getRequest（）.getAttribute（"foo"）
E.String x = （String） pageContext.getAttribute（"foo"， PageContext.ANY_SCOPE）

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單項(xiàng)選擇題

You are building a web application that will be used throughout the European Union； therefore， it has significant internationalization requirements. You have been tasked to create a custom tag that generates amessage using the java.text.MessageFormat class. The tag will take the resourceKey attribute and a variable number of argument attributes with the format， arg. Here is an example use of this tag and itsoutput： generates： The disk "MyDisk"contains 1247 file（s）.
Which Simple tag class definition accomplishes this goal of handling a variable number of tag attributes？（）

A.
B.
C.
D.

單項(xiàng)選擇題

Click the Exhibit button.

The attribute "name" has a value of "Foo，"
What is the result if this tag handler’s tag is invoked？（）

A.Foo
B.done
C.Foodone
D.An exception is thrown at runtime
E.No output is produced from this code
F.Compilation fails because of an error in this code

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Click the Exhibit button. The attribute "name" has a value of "Foo，" What is the result if this tag handler’s tag is invoked？（）

Click the Exhibit button.

The attribute "name" has a value of "Foo，"
What is the result if this tag handler’s tag is invoked？（）