QUESTION 106

You have built a web application that you license to small businesses. The webapp uses a context parameter,
called licenseExtension, which enables certain advanced features based on your client's license package.
When a client pays for a specific service, you provide them with a license extension key that they insert into the
< context-param> of the deployment descriptor. Not every client will have this context parameter so you need to
create a context listener to set up a default value in the licenseExtension parameter.
Which code snippet will accomplish this goal?

A. You cannot do this because context parameters CANNOT be altered programmatically.
B. 
    String ext = context.getParameter(`licenseExtension');
    if ( ext == null ) {
        context.setParameter(`licenseExtension' DEFAULT);
    }
C.
    String ext = context.getAttribute(`licenseExtension');
    if ( ext == null ) {
        context.setAttribute(`licenseExtension' DEFAULT);
    }
D.
    String ext = context.getInitParameter(`licenseExtension')
    if ( ext == null ) {
        context.resetInitParameter(`licenseExtension' DEFAULT);
    }
E.
    String ext = context.getInitParameter(`licenseExtension')
    if ( ext == null ) {
        context.setInitParameter(`licenseExtension' DEFAULT);
    }

Correct Answer: A