Detect OS

[Dan Parsons]

I have done browser sniffer using servlet in the past.
Now I want to detect OS using Servlet but I keep getting OS of the Web Server that is hosting my Tomcat container:

//Servlet condition
if (navigator.appVersion.indexOf("5.1")!=-1)
{
    //redirect
}

Anyway I can detect the client OS using server side Java instead of client side JavaScript?

[Maneesh Godbole]

How about

   request.getHeader("User-Agent"); 

On my machine I get

Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_4; en-US) AppleWebKit/534.3 (KHTML, like Gecko) Chrome/6.0.472.63 Safari/534.3