doubt in flush method

[V Gala]

Which of the following code will work fine ? Assume all the variables are initialized

properly. Select two
A public void doGet (HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException{
PrintWriter out = response.getWriter();
ServletOutputStream stream = response.getOutputStream();
out.println ("Worked....");
}
B public void doGet (HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException{
PrintWriter out = response.getWriter();
response.setContentType("text/html");
out.println ("Worked....");
}
C public void doGet (HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException{
PrintWriter out = response.getWriter();
out.flush();
response.setContentType("myname");
out.println ("Worked....");
}

D None of the above



B and C

Answer A is incorrect because we cannot call getOutputStream after getWriter. it will throw an IllegalStateException. Answer B will work fine. Answer C also will work fine even though myname is not a valid content type. The container will think that it

is a new mime type.


Is option c a valid answer?

[Marc Peabody]

Please Quote Your Sources.

[Ash More']

a para straight from the api documentation:
=============================================================================
This method may be called repeatedly to change content type and character encoding. This method has no effect if called after the response has been committed. It does not set the response's character encoding if it is called after getWriter has been called or after the response has been committed.
=============================================================================

well after using the flush method on out object, content can still be written to out. the problem comes while adding headers and cookies after the response is committed.