About Question enthuware.jwpv6.2.1162 :

[ednilsoncampos]

This question repeated in this question 52

[admin]

One is talking about ServletResponse and another one is about HttpServletResponse. Both are API based questions about how to set content type. Repeated with minor changes because it is important for the exam.

[himaiMinh]

But I think setHeader is also a correct option.
HttpServletResponse.setHeader("Content-Type", "....") will work too.

[admin]

Plese read the explanation that is given with this option. The question is about ServletRequest and not about HttpServletRequest.