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Oracle Java Enterprise Edition 5 Web Component Developer Certified Professional Sample Questions:

Question 1

After a merger with another small business, your company has inherited a legacy WAR file but the original source files were lost. After reading the documentation of that web
application, you discover that the WAR file contains a useful tag library that you want to reuse in your own webapp packaged as a WAR file.
What do you need to do to reuse this tag library?

A. Unpack the legacy WAR file, move the TLD file to the META-INF directory, repackage the whole thing as a JAR file, and place that JAR file in your webapp's library directory.
B. Simply rename the legacy WAR file as a JAR file and place it in your webapp's library directory.
C. Unpack the legacy WAR file, move the TLD file to the META-INF directory, move the class files to the top-level directory, repackage the whole thing as a JAR file, and place that JAR file in your webapp's library directory.
D. Unpack the legacy WAR file, move the TLD file to the META-INF directory, move the class files to the top-level directory, repackage the WAR, and place that WAR file in your webapp's WEB-INF directory.

Question 2

You have a simple web application that has a single Front Controller servlet that dispatches to JSPs to generate a variety of views. Several of these views require further database processing to retrieve the necessary order object using the orderID request parameter. To do this additional processing, you pass the request first to a servlet that is mapped to the URL pattern /WEB-INF/retreiveOrder.do in the deployment descriptor. This servlet takes two request parameters, the orderID and the jspURL. It handles the database calls to retrieve and build the complex order objects and then it dispatches to the jspURL.
Which code snippet in the Front Controller servlet dispatches the request to the order retrieval servlet?

A. request.setParameter("orderID", orderID);
request.setParameter("jspURL", jspURL);
Dispatcher view
= request.getDispatcher("/WEB-INF/retreiveOrder.do");
view.forwardRequest(request, response);
B. String T="/WEB-INF/retreiveOrder.do?orderID=%d&jspURL=%s";
String url = String.format(T, orderID, jspURL);
Dispatcher view
= context.getDispatcher(url);
view.forwardRequest(request, response);
C. request.setAttribute("orderID", orderID);
request.setAttribute("jspURL", jspURL);
RequestDispatcher view
= context.getRequestDispatcher("/WEB-INF/retreiveOrder.do");
view.forward(request, response);
D. String T="/WEB-INF/retreiveOrder.do?orderID=%d&jspURL=%s";
String url = String.format(T, orderID, jspURL);
RequestDispatcher view
= context.getRequestDispatcher(url);
view.forward(request, response);

Question 3

Click the Exhibit button.
A session-scoped attribute, product, is stored by a servlet. That servlet then forwards to a JSP page. This attribute holds an instance of the com.example.Product class with a name property of "The Matrix" and price property of 39.95.
Given the JSP page code snippet:
1.<jsp:useBean id='product' class='com.example.Product'>
2.<jsp:setProperty name='product' property='price' value='49.95'/>
3.</jsp:useBean>
4.<%= product.getName() %> costs <%= product.getPrice() %> What is the response output of this JSP page code snippet?

A. The Matrix costs 0.0
B. Default costs 49.95
C. The Matrix costs 49.95
D. The Matrix costs 39.95
E. Default costs 0.0
F. Default costs 39.95

Question 4

Assume the tag handler for a st:simple tag extends SimpleTagSupport. In what way can scriptlet code be used in the body of st:simple?

A. Scriptlet code is NOT legal in the body of st:simple.
B. add scripting-enabled="true" to the start tag for the st:simple element
C. add a pass-through Classic tag with a body content type of JSP to the body of st:simple, and place the scriptlet code in the body of that tag
D. set the body content type to JSP in the TLD

Question 5

Given:
6.<myTag:foo bar='42'>
7.<%="processing" %>
8.</myTag:foo>
and a custom tag handler for foo which extends TagSupport.
Which two are true about the tag handler referenced by foo? (Choose two.)

A. The doAfterBody method is NOT called.
B. The doStartTag method is called once.
C. The EVAL_BODY_BUFFERED constant is a valid return value for the doStartTag method.
D. The SKIP_PAGE constant is a valid return value for the doStartTag method.
E. The EVAL_PAGE constant is a valid return value for the doEndTag method.

Solutions: