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

1. You need to create a servlet filter that stores all request headers to a database for all requests to the web application's home page "/index.jsp". Which HttpServletRequest method allows you to retrieve all of the request headers?

A) java.util.Iterator getHeaderNames()
B) String[] getHeaderNames()
C) java.util.Iterator getRequestHeaders()
D) java.util.Enumeration getRequestHeaders()
E) java.util.Enumeration getHeaderNames()
F) String[] getRequestHeaders()

2. Given a Filter class definition with this method:
21.
public void doFilter(ServletRequest request,
22.
ServletResponse response,
23.
FilterChain chain)
24.
throws ServletException, IOException {
25.
// insert code here
26.
}
Which should you insert at line 25 to properly invoke the next filter in the chain, or the target servlet if there are no more filters?

A) chain.forward(request, response);
B) request.forward(request, response);
C) chain.doFilter(request, response);
D) request.doFilter(request, response);

3. In a JSP-centric shopping cart application, you need to move a client's home address of the Customer object into the shipping address of the Order object. The address data is stored in a value object class called Address with properties for: street address, city, province, country, and postal code. Which two JSP code snippets can be used to accomplish this goal? (Choose two.)

A) <jsp:setProperty name='${order}' property='shipAddress' value='${client.homeAddress}' />
B) <c:set target='${order}' property='shipAddress' value='${client.homeAddress}' />
C) <c:setProperty name='${order}' property='shipAddress'> <jsp:getProperty name='client' property='homeAddress' /> </c:setProperty>
D) <c:set var='order' property='shipAddress'> <jsp:getProperty name='client' property='homeAddress' /> </c:store>
E) <c:set target='${order}' property='shipAddress'> <jsp:getProperty name='client' property='homeAddress' /> </c:set>
F) <c:set var='order' property='shipAddress' value='${client.homeAddress}' />

4. A developer has created a web application that includes a servlet for each use case in the application. These servlets have become rather difficult to maintain because the request processing methods have become very large. There is also common processing code in many servlets because these use cases are very similar. Which two design patterns can be used together to refactor and simplify this web application? (Choose two.)

A) View Helper
B) Proxy
C) Model-View-Controller
D) Business Delegate
E) Front Controller
F) Session Facade

5. Given an HttpServletRequest request and HttpServletResponse response, which sets a cookie "username" with the value "joe" in a servlet?

A) request.addHeader(new Cookie("username", "joe"))
B) request.addCookie(new Cookie("username", "joe"))
C) response.addCookie("username", "joe")
D) response.addCookie(new Cookie("username", "joe"))
E) request.setCookie("username", "joe")
F) request.addCookie("username", "joe")
G) response.addHeader(new Cookie("username", "joe"))

Solutions: