SUN Sun Certified Web Component Developer for J2EE 5 Sample Questions:
1. Which statement is true if the doStartTag method returns EVAL_BODY_BUFFERED ?
A) The setBodyContent method is called once.
B) It is never legal to return EVAL_BODY_BUFFERED from doStartTag.
C) The doAfterBody method is NOT called.
D) The tag handler must implement BodyTag.
2. Given a header in an HTTP request:
X-Retries: 4
Which two retrieve the value of the header from a given HttpServletRequest request?
(Choose two.)
A) request.getHeaders("X-Retries").get(0)
B) request.getRequestHeaders("X-Retries").get(0)
C) request.getHeader("X-Retries")
D) request.getRequestHeader("X-Retries")
E) request.getIntHeader("X-Retries")
3. 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, 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.
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, 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.
4. For manageability purposes, you have been told to add a "count" instance variable to a critical JSP Document so that a JMX MBean can track how frequent this JSP is being invoked. Which JSP code snippet must you use to declare this instance variable in the JSP
Document?
A) <jsp:declaration.instance>
int count = 0;
< jsp:declaration.instance>
B) <jsp:declaration>
int count = 0;
< jsp:declaration>
C) <%! int count = 0; %>
D) <jsp:scriptlet.declaration>
int count = 0;
< jsp:scriptlet.declaration>
5. Which three are valid values for the body-content attribute of a tag directive in a tag file?
(Choose three.)
A) tagdependent
B) JSP
C) scriptless
D) dynamic
E) EL
F) empty
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: C,E | Question # 3 Answer: A | Question # 4 Answer: B | Question # 5 Answer: A,C,F |
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