Servlets require downloading ? While .jsp files do not ?

I've deployed my web application and parts of my web application are running servlets which I have declared properly in my web.xml.
Currently my JSP files are able to running perfectly, but my servlet classes are loaded correctly, but my web browser prompts me to download the servlets. The servlet content is correct, but I require the servlets to be run and not downloaded !
Is there anywhere I can configure to make the servlets run properly where they should instead of being downloaded ?
My system is running on Red Hat Linux, Oracle 10g Application Server 10.1.2.0.0.
Thanks in advance.

In your servlets that produce html pages, Do you have
   response.setContentType("text/html");
By default, the contentType of .jsp files is text/html. So your .jsp files will be fine.

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