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Oracle 1Z0-858 Exam Syllabus Topics:

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

Question 1

A developer wants a web application to be notified when the application is about to be shut down. Which two actions are necessary to accomplish this goal? (Choose two.)

A. include a listener directive in a JSP page
B. include a <servlet-destroy> element in the web application deployment descriptor
C. include a class implementing ServletContextListener as part of the web application deployment
D. configure a listener in the application deployment descriptor, using the <listener> element
E. configure a listener in the TLD file using the <listener> element
F. include a class implementing ContextDestroyedListener as part of the web application deployment
G. include a class implementing HttpSessionAttributeListener as part of the web application deployment

Question 2

For which three events can web application event listeners be registered? (Choose three.)

A. when a cookie has been created
B. when a session is created
C. after a servlet is destroyed
D. when a session has timed out
E. when a servlet has forwarded a request
F. when a session attribute value is changed

Question 3

Given:
11.
<%
12.
request.setAttribute("vals", new String[]{"1","2","3","4"});
13.
request.setAttribute("index", "2");
14.
%>
15.
<%-- insert code here --%>
Which three EL expressions, inserted at line 15, are valid and evaluate to "3"? (Choose three.)

A. ${vals[index]}
B. ${vals.index}
C. ${vals[vals[index-1]]}
D. ${vals.2}
E. ${vals["2"]}
F. ${vals}[index]
G. ${vals.(vals.index)}

Question 4

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 a message using the java.text.MessageFormat class. The tag will take the resourceKey attribute and a variable number of argument attributes with the format, arg<N>. Here is an example use of this tag and its output:
<t:message resourceKey='diskFileMsg' arg0='MyDisk' arg1='1247' />
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. public class MessageTag extends SimpleTagSupport
implements DynamicAttributes {
private Map attributes = new HashMap();
public void putAttribute(String name, Object value) {
this.attributes.put(name, value);
}
// more tag handler methods
}
B. public class MessageTag extends SimpleTagSupport
implements DynamicAttributes {
private Map attributes = new HashMap();
public void setDynamicAttribute(String uri, String name,
Object value) {
this.attributes.put(name, value);
}
// more tag handler methods
}
C. public class MessageTag extends SimpleTagSupport
implements VariableAttributes {
private Map attributes = new HashMap();
public void setVariableAttribute(String uri,
String name, Object value) {
this.attributes.put(name, value);
}
// more tag handler methods
}
D. The Simple tag model does NOT support a variable number of attributes.
E. public class MessageTag extends SimpleTagSupport
implements VariableAttributes {
private Map attributes = new HashMap();
public void putAttribute(String name, Object value) {
this.attributes.put(name, value);
}
// more tag handler methods
}

Question 5

Which JSTL code snippet can be used to import content from another web resource?

A. Importing cannot be done in JSTL. A standard action must be used instead.
B. <c:import page="foo.jsp"/>
C. <c:include url="foo.jsp"/>
D. <c:import url="foo.jsp"/>
E. <c:include page="foo.jsp"/>

Solutions: