Final Mock Test Question 26 Head First and Servlets

[Mohit G Gupta]

Final Mock Test Question 26 Head First and Servlets

01. <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> 02. 03. <% 04. java.util.List books = new java.util.ArrayList(); 05. // add line here 06. request.setAttribute("myFavoriteBooks", books); 07. %> 08. 09. <c:choose> 10. <c:when test="${not empty myFavoriteBooks}"> 11. My favorite books are: 12. <c:forEach var="book" items="${myFavoriteBooks}"> 13. <br/> * ${book} 14. </c:forEach> 15. </c:when> 16. <c:otherwise> 17. I have not selected any favorite books. 18. </c:otherwise> 19. </c:choose>

Which of the following lines of code, if inserted independently at Line 5, will cause the text
within the ctherwise tag to display? (Choose all that apply)

A. books.add("");
B. books.add(null);
C. books.clear();
D. books.add("Head First");
E. books = null;

Correct answer are B,D

Options D,E makes the result of EL
${not empty myFavoriteBooks}
return false and will cause the text
within the ctherwise tag to display.
Moreover,

books.add(null);

will cause the El to return True.

Correct answer should be D,E

[Mohit G Gupta]

Please Help me fellow ranchers.

[Frits Walraven]

Hi Mohit,

The correct answers should be C and E, check the errata

Regards,
Frits