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SUN 310-083 Exam Syllabus Topics:

SUN Sun Certified Web Component Developer for J2EE 5 Sample Questions:

1. You have built a web application that you license to small businesses. The webapp uses a context parameter, called licenseExtension, which enables certain advanced features based on your client's license package. When a client pays for a specific service, you provide them with a license extension key that they insert into the <context-param> of the deployment descriptor. Not every client will have this context parameter so you need to create a context listener to set up a default value in the licenseExtension parameter. Which code snippet will accomplish this goal?

A) You cannot do this because context parameters CANNOT be altered programmatically.
B) String ext = context.getAttribute('licenseExtension');
if ( ext == null ) {
context.setAttribute('licenseExtension', DEFAULT);
}
C) String ext = context.getInitParameter('licenseExtension');
if ( ext == null ) {
context.resetInitParameter('licenseExtension', DEFAULT);
}
D) String ext = context.getInitParameter('licenseExtension');
if ( ext == null ) {
context.setInitParameter('licenseExtension', DEFAULT);
}
E) String ext = context.getParameter('licenseExtension');
if ( ext == null ) {
context.setParameter('licenseExtension', DEFAULT);
}

2. Given:
3 . class MyServlet extends HttpServlet {
4 . public void doPut(HttpServletRequest req,
HttpServletResponse resp)
throws ServletException, IOException {
5. // servlet code here
...
2 6. }
2 7. }
If the DD contains a single security constraint associated with MyServlet and its only <http- method> tags and <auth-constraint> tags are:
< http-method>GET</http-method>
< http-method>PUT</http-method>
< auth-constraint>Admin</auth-constraint>
Which four requests would be allowed by the container? (Choose four.)

A) A user whose role is Admin can perform a GET.
B) A user whose role is Admin can perform a PUT.
C) A user whose role is Member can perform a PUT.
D) A user whose role is Admin can perform a POST.
E) A user whose role is Member can perform a GET.
F) A user whose role is Member can perform a POST.

3. You are building your own layout mechanism by including dynamic content for the page's header and footer sections. The footer is always static, but the header generates the <title> tag that requires the page name to be specified dynamically when the header is imported.
Which JSP code snippet performs the import of the header content?

A) <jsp:import page='/WEB-INF/jsp/header.jsp'>
< jsp:param name='pageName' value='Welcome Page' />
< /jsp:import>
B) <jsp:import page='/WEB-INF/jsp/header.jsp'>
< jsp:attribute name='pageName' value='Welcome Page' />
< /jsp:import>
C) <jsp:include page='/WEB-INF/jsp/header.jsp'>
< jsp:attribute name='pageName' value='Welcome Page' />
< /jsp:include>
D) <jsp:include page='/WEB-INF/jsp/header.jsp'>
< jsp:param name='pageName' value='Welcome Page' />
< /jsp:include>

4. Assume a JavaBean com.example.GradedTestBean exists and has two attributes. The attribute name is of type java.lang.String and the attribute score is of type java.lang.Integer.
An array of com.example.GradedTestBean objects is exposed to the page in a request- scoped attribute called results. Additionally, an empty java.util.HashMap called resultMap is placed in the page scope.
A JSP page needs to add the first entry in results to resultMap, storing the name attribute of the bean as the key and the score attribute of the bean as the value.
Which code snippet of JSTL code satisfies this requirement?

A) ${resultMap[results[0].name] = results[0].score}
B) <c:set target="${resultMap}" property="${results[0].name}"
value="${results[0].score}" />
C) <c:set var="resultMap" property="${results[0].name}"
value="${results[0].score}" />
D) <c:set var="${resultMap}" key="${results[0].name}"
value="${results[0].score}" />
E) <c:set var="resultMap" property="${results[0].name}">
$ {results[0].value}
< /c:set>

5. Which two statements about tag files are true? (Choose two.)

A) A file named foo.tag, located in a web application's root directory, is recognized as a tag file by the container.
B) A file named foo.tag, located in /WEB-INF/tags/bar, is recognized as a tag file by the container.
C) If files foo1.tag and foo2.tag both reside in /WEB-INF/tags/bar, the container will consider them part of the same tag library.
D) A file named foo.tag, bundled in a JAR file but NOT defined in a TLD, triggers a container translation error.
E) Classic tag handlers and tag files CANNOT reside in the same tag library.

Solutions: