Head First Servlets and JSP, 2nd Edition

Coffee Cram: Chapter 8 Answers

1. Given an HTML form that uses checkboxes to allow a user to select multiple values for a parameter called hobbies.

   (JSP v2.0 sections 2.2.3)

   Which EL expressions evaluate to the first value of the hobbies parameter? (Choose all that apply.)

   	A.	${param.hobbies}
   	B.	${paramValue.hobbies}
   	C.	${paramValues.hobbies[0]}
   	D.	${paramValues.hobbies[1]}
   	E.	${paramValues[hobbies][0]}
   	F.	${paramValues[hobbies][1]}

   Note

   -Option B is incorrect because there is no “paramValue” implicit variable.

   -Option D is incorrect, arrays are 0 indexed.

   -Options E and F have incorrect syntax.

2. Given that a web application stores the webmaster email address in the servlet context initialization parameter called master-email.

   (JSP v2.0 sections 2.2.3 and 2.3.4)

   Which retrieves that value? (Choose all that apply.)

   A. ...