JBridge: Certification Question Of The Day

Which of the following sets of statements should compile successfully within a JSP? (2 correct answers)

<%@ page import = "java.util.*" %>
<% Enumeration e = application.getInitParameterNames(); %>

<%@ page import = "java.util.*" %>
<% Vector v = application.getInitParameterNames(); %>

<% Object o = application.getAttribute("My Attribute"); %>

<% long l = application.getMinorVersion(); %>

<% String s = application.getMimeType(); %>

The Answer

A and C will compile successfully, so are the correct answers.
The question revolves around the application JSP implicit variable, which is an instance of a class implementing the ServletContext interface. All the answers use legitimate methods from ServletContext, though not always with the correct parameters or return types.
getInitParameterNames() returns an Enumeration, not a Vector (so answer A is right and B is wrong).
getMinorVersion() (answer D) returns an int, not a long; there aren't that many revisions of the servlet API anticipated!
getMimeType() takes a parameter - a String - which tells the method which file to examine in order to return a mime type. So E is false.