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Oracle 1Z0-858 Exam Syllabus Topics:

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

1. Given:
5.public class MyTagHandler extends TagSupport {
6.public int doStartTag() throws JspException {
7.try {
8.// insert code here
9.} catch(Exception ex) { /* handle exception */ }
10.
return super.doStartTag();
11.
} ...
42. }
Which code snippet, inserted at line 8, causes the value foo to be output?

A) JspWriter w = new JspWriter(pageContext.getWriter());
B) print("foo");
C) JspWriter w = new JspWriter(pageContext.getResponse());
D) print("foo");
E) JspWriter w = pageContext.getWriter();
F) print("foo");
G) JspWriter w = pageContext.getOut();
H) print("foo");

2. 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) set the body content type to JSP in the TLD
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) Scriptlet code is NOT legal in the body of st:simple.

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) 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.
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) Simply rename the legacy WAR file as a JAR file and place it in your webapp's library directory.

4. Given the two security constraints in a deployment descriptor:
101.
<security-constraint>
102.
<!--a correct url-pattern and http-method goes here-->
103.
<auth-constraint><role-name>SALES</role-name></auth-
103.
<auth-constraint>
104.
<role-name>SALES</role-name>
105.
</auth-constraint>
106.
</security-constraint>
107.
<security-constraint>
108.
<!--a correct url-pattern and http-method goes here-->
109.
<!-- Insert an auth-constraint here -->
110.
</security-constraint>
If the two security constraints have the same url-pattern and http-method, which two, inserted independently at line 109, will allow users with role names of either SALES or MARKETING to access this resource? (Choose two.)

A) <auth-constraint> <role-name>MARKETING</role-name> </auth-constraint>
B) <auth-constraint> <role-name>ANY</role-name> </auth-constraint>
C) <auth-constraint> <role-name>*</role-name> </auth-constraint>
D) <auth-constraint/>

5. Given that a web application consists of two HttpServlet classes, ServletA and ServletB, and the ServletA.service method:
20.
String key = "com.example.data";
21.
session.setAttribute(key, "Hello");
22.
Object value = session.getAttribute(key);
23.
Assume session is an HttpSession, and is not referenced anywhere else in ServletA.
Which two changes, taken together, ensure that value is equal to "Hello" on line 23? (Choose two.)

A) ensure that the ServletB.service method is synchronized
B) enclose lines 21-22 in a synchronized block:
synchronized(this) {
session.setAttribute(key, "Hello");
value = session.getAttribute(key);
}
C) ensure that ServletB synchronizes on the session object when setting session attributes
D) ensure that the ServletA.service method is synchronized
E) enclose lines 21-22 in a synchronized block:
synchronized(session) {
session.setAttribute(key, "Hello");
value = session.getAttribute(key);
}

Solutions: