While + response.getWriter()

[ZeinaShehab]

Hi

I have a servlet that is connected to a midlet.
the midlet has its information from the database using the servlet by the response.getWriter().

this is a part of my code here:

PrintWriter out = response.getWriter();
while (!Types[i].equals(""))
{
out.println(Types[i]);
i++;
}

where Types is a String [ ] that contains the data from the database.
but an error is always showing, i guess it is because of the while loop.
can anyone tell me why is it showing?

Regards

[ektasrv]

What error is shown ?

[ZeinaShehab]

actually it is running, but when the execution reaches this operation it gives:
java.lang.nullpointerexception at this line.