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Oracle 1Z0-858 Exam Syllabus Topics:

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

Question 1

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

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

Question 2

Given a JSP page:
11.
<n:recurse>
12.
<n:recurse>
13.
<n:recurse>
14.
<n:recurse />
15.
</n:recurse>
16.
</n:recurse>
17.
</n:recurse>
The tag handler for n:recurse extends SimpleTagSupport.
Assuming an n:recurse tag can either contain an empty body or another n:recurse tag, which strategy allows the tag handler for n:recurse to output the nesting depth of the deepest n:recurse tag?

A. If the tag has a body, invoke the fragment for that body.Otherwise, start a counter at 1. Call getParent(). If it returns null, output the value of the counter Otherwise, increment the counter and continue from where getParent() is called.
B. Create a private non-static attribute in the tag handler class called count of type int initialized to 0. Increment count in the doTag method. If the tag has a body, invoke the fragment for that body. Otherwise, output the value of count.
C. Start a counter at 1. Call getChildTags(). If it returns null, output the value of the counter. Otherwise, increment counter and continue from where getChildTags() is called. Skip processing of the body.
D. It is impossible to determine the deepest nesting depth because it is impossible for tag handlers that extend SimpleTagSupport to communicate with their parent and child tags.

Question 3

You want to create a filter for your web application and your filter will implement javax.servlet.Filter.
Which two statements are true? (Choose two.)

A. Your filter class must also implement javax.servlet.FilterChain.
B. Your filter class must implement a doFilter method that takes, among other things, an HTTPServletRequest object and an HTTPServletResponse object.
C. When your filter chains to the next filter, it should pass the same arguments it received in its doFilter method.
D. The method that your filter invokes on the object it received that implements javax.servlet.FilterChain can invoke either another filter or a servlet.
E. Your filter class must implement an init method and a destroy method.

Question 4

You are writing a JSP that includes scriptlet code to declare a List variable and initializes that variable to an ArrayList object. Which two JSP code snippets can you use to import these list types? (Choose two.)

A. <%@ import types='java.util.List,java.util.ArrayList' %>
B. <%! import java.util.*; %>
C. <%! import java.util.List; import java.util.ArrayList; %>
D. <%@ page import='java.util.List'
import='java.util.ArrayList' %>
E. <%@ import types='java.util.List' types='java.util.ArrayList' %>
F. <%@ page import='java.util.List,java.util.ArrayList' %>

Question 5

Click the Exhibit button.
The Appliance class is a Singleton that loads a set of properties into a Map from an external data source. Assume:
An instance of the Appliance class exists in the application-scoped attribute, appl The appliance object includes the name property that maps to the value Cobia The request-scoped attribute, prop, has the value name.
Which two EL code snippets will display the string Cobia? (Choose two.)

A. ${appl.properties[name]}
B. ${appl.properties[prop]}
C. ${appl.getProperties().get(prop)}
D. ${appl.getProperties().get('name')}
E. ${appl.properties.name}
F. ${appl.properties.prop}

Solutions: