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

1. Given that a scoped attribute cart exists only in a user's session, which two, taken independently, ensure the scoped attribute cart no longer exists? (Choose two.)

A) <c:remove scope="session">${cart}</c:remove>
B) ${cart = null}
C) <c:remove var="cart" />
D) <c:remove var="cart" scope="session" />
E) <c:remove var="${cart}" />
F) <c:remove scope="session">cart</c:remove>
G) <c:remove var="${cart}" scope="session" />

2. You have built a web application that you license to small businesses. The webapp uses a context parameter, called licenseExtension, which enables certain advanced features based on your client's license package. When a client pays for a specific service, you provide them with a license extension key that they insert into the <context-param> of the deployment descriptor. Not every client will have this context parameter so you need to create a context listener to set up a default value in the licenseExtension parameter. Which code snippet will accomplish this goal?

A) String ext = context.getInitParameter('licenseExtension');
if ( ext == null ) { context.setInitParameter('licenseExtension', DEFAULT); }
B) String ext = context.getInitParameter('licenseExtension');
if ( ext == null ) {
context.resetInitParameter('licenseExtension', DEFAULT);
}
C) You cannot do this because context parameters CANNOT be altered programmatically.
D) String ext = context.getParameter('licenseExtension');
if ( ext == null ) {
context.setParameter('licenseExtension', DEFAULT);
}
E) String ext = context.getAttribute('licenseExtension');
if ( ext == null ) {
context.setAttribute('licenseExtension', DEFAULT);
}

3. Click the Exhibit button.
Assume the product attribute does NOT yet exist in any scope.
Which two create an instance of com.example.Product and initialize the name and price
properties to the name and price request parameters? (Choose two.)

A) <jsp:useBean id="product" class="com.example.Product" />
<jsp:setProperty name="product" property="*" />
B) <jsp:useBean id="product" class="com.example.Product" />
<jsp:setProperty name="product" property="name"
value="${param.name}" />
<jsp:setProperty name="product" property="price"
value="${param.price}" />
C) <jsp:useBean id="product" class="com.example.Product" />
<% product.setName( request.getParameter( "name" ) ); %>
<% product.setPrice( request.getParameter( "price" ) ); %>
D) <jsp:useBean id="product" class="com.example.Product">
<jsp:setProperty name="product" property="name"
value="${name}" />
<jsp:setProperty name="product" property="price"
value="${price}" />
</jsp:useBean>

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

5. 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) <%! int count = 0; %>
B) <jsp:scriptlet.declaration> int count = 0; <jsp:scriptlet.declaration>
C) <jsp:declaration> int count = 0; <jsp:declaration>
D) <jsp:declaration.instance> int count = 0; <jsp:declaration.instance>

Solutions: