Java EE 6 Web Component Developer Certified Expert Exam (1Z0-899) Free Practice Test

Question 1

Which method must be used to encode a URL passed as an argument to HttpServletResponse. sendRedirect when using URL rewriting for session tracking?

A. ServletResponse.encodeURL

B. HttpServletResponse.encodeURL

C. HttpServletResponse.encodeRedirectURL

D. ServletResponse.encodeRedirectURL

Correct Answer: C

Question 2

You are building a dating web site. The client's date of birth is collected along with lots of other information.
The Person class has a derived method, getAge() :int, which returns the person's age calculated from the date of birth and today's date. In one of your JSPs you need to print a special message to clients within the age group of 25 through 35.
Which two EL code snippets will return true for this condition? (Choose two.)

A. ${client.age > 35 && client.age < 25}

B. ${client.age le 35 and client.age ge 25}

C. ${client.age in [25,35]}

D. ${client.age <= 35 && client.age >= 25}

E. ${client.age between 25,35}

F. ${client.age between [25,35]}

Correct Answer: B,D

Question 3

Given the JavaBean class:
public class MyBean {
private Boolean roasted = false;
public MyBean () {}
public Boolean isRoasted () { returned roasted }
public void setRoasted (Boolean roasted) { this.roasted = roasted; ]
}
Assume a controller has created an instance of this bean, called setRoasted (true), and inserted the bean into the application scope using the name "myBean".
A JSP contains these two tags:
<jsp: useBean id = "aBean" class = "MyBean" scope = "page" \ />
<jsp: getProprty name = "aBean" property = "roasted" \ />
Which is true?

A. the page will report that the syntax of the getProperty tag ls incorrect

B. the page will report that the syntax of the useBean tag is incorrect

C. the page will include the output true

D. the page will report that the property roasted does not exist

E. the page will include the output false

Correct Answer: E

Question 4

To take advantage of the capabilities of modern browsers that use web standards, such as XHTML and CSS, your web application is being converted from simple JSP pages to JSP Document format. However, one of your JSPs, /scripts/screenFunctions.jsp, generates a JavaScript file. This file is included in several web forms to create screen-specific validation functions and are included in these pages with the following statement:

Which JSP code snippet declares that this JSP Document is a JavaScript file?

A. <%@ page contentType='application/javascript' %>

B. No declaration is needed because the web form XHTML page already declares the MIME type of the
/scripts/screenFunctions.jsp file in the <script> tag.

C. <jsp:document contentType='application/javascript' />

D. <jsp:directive.page contentType='application/javascript' />

E. <jsp:page contentType='application/javascript' />

Correct Answer: D

Question 5

You are working on a JSP that is intended to inform users about critical errors in the system. The JSP code is attempting to access the exception that represents the cause of the problem, but your IDE is telling you that the variable does not exist. What should you do to address this problem?

A. Add a page directive stating that this page is an error handler

B. Add scriptlet code to create a variable that refers to the exception

C. Perform the error handling in a servlet rather than in the JSP

D. Edit the page that caused the error to ensure that it specifies this page as its error handler

E. Add a <jsp:useBean tag to declare the and access the exception

Correct Answer: A

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Question 6

A popular Ajax framework and its companion widget library contain several hundreds of files of different types (.js, .ess, .html). Your company has mandated that all its web applications use only specific versions of this framework approved by IT and repackaged internally as jar files. Furthermore, web applications should only include the entire jar, without subsetting or modification.
Where should the framework's files be placed inside a jar file to enable this kind of reuse?

A. under WEB-INF/resources

B. under META-INF/web-contents

C. under resources

D. under META-INF/resources

Correct Answer: D

Question 7

Users of your web application have requested that they should be able to set the duration of their sessions. So for example, one user might want a webapp to stay connected for an hour rather than the webapp's default of fifteen minutes; another user might want to stay connected for a whole day.
Furthermore, you have a special login servlet that performs user authentication and retrieves the object from the database. You want to augment this code to set up the user's specified session duration.
Which code snippet in the login servlet will accomplish this goal?

A. User user = / / retrieves the user objects object from the databasesession.setMaxDurationInterval (user.getSessionDuration());

B. User user = / / retrieves the user objects object from the databasesession.setDurationInterval (user.getSessionDuration());

C. User user = / / retrieves the user objects object from the databasesession.setInactiveInterval (user.get.SessionDuration());

D. User user = / / retrieves the user objects object from the databasesession.setMaxInactiveInterval (user.getSessionDuration());

E. User user = / / retrieves the User objects from the databasesession.setInactiveInterval (user.getSessionDuration());

F. User user = / / retrieves the user objects object from the databasesession.setDuration (user.getSessionDuration());

Correct Answer: D

Question 8

In your web application, you need to execute a block of code whenever the session object is first created.
Which design will accomplish this goal?

A. Create a Filter class, call the getSession(false) method, and if the result was null, then execute that block of code.

B. Create an HttpSessionListener class and implement the sessionCreated method with that block of code.

C. Create an HttpSessionActivationListener class and implement the sessionCreated method with that block of code.

D. Create a Filter class, call the getSession(true) method, and if the result was NOT null, then execute that block of code.

E. Create an HttpSessionListener class and implement the sessionInitialized method with that block of code.

Correct Answer: B

Question 9

An appropriate jsp:useBean tag has been placed into a JSP, and identified the bean using the name "theBean".
The bean class includes a method with the following signature:
public boolean isOurCustomer ()
You wish to insert the test true or false into the output HTML based on the return value of this method. Which is true?

A. This can be achieved using a tag of the form: <jsp:getProperty id= "theBean" property= "ourCustomer"
/>

B. This can be achieved using a tag of the form: <jsp:getProperty name= "theBean" type= "boolean" property= "ourCustomer" />

C. This can be achieved using a tag of the form: <jsp:getProperty id= "theBean" invoke
"getOurCustomer" />

D. This can be achieved using a tag of the form: <jsp:getProperty name= "theBean" property
"ourCustomer" />

E. This cannot be achieved because the method isOurCustomer () does not adhere to JavaBeans conventions.

F. This cannot be achieved because the return type of isOurCustomer () is not String

Correct Answer: D

Question 10

You are building a dating service web site. Part of the form to submit a client's profile is a group of radio buttons for the person's hobbies:
20. <input type = 'radio' name = 'hobbyEnum' value = 'HIKING'> Hiking <br>
21. <input type = 'radio' name = 'hobbyEnum' value = 'SKING'> Sking <br>
22. <input type = 'radio' name = 'hobbyEnum' value = 'SCUBA'> SCUBA <br>
23. <! - - and more options - - >>
After the user submits this form, a confirmation screen is displayed with these hobbies listed. Assume that an application-scoped hobbies, holds a map between the hobby enumerated type and the display name.
Which EL code snippet will display Nth element of the user's selected hobbles?

A. ${hobbies [paramValues @ 'hobbyEnum' @N]

B. ${hobbies [hobbyEnum[N]}

C. ${hobbies [paramValues.hobbyEnum[N]]}

D. ${hobbies.get(paramValues.hobbyEnum[N]) }

E. ${hobbies [paramValues.hobbyEnum.get(N)] }

Correct Answer: C

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