get cookie thru servlet

[Anon]

i have set a cookie in php file and now want to get it thru servlet.it does not return anything.but if i call a php file cookie value is returned.
php code is $HTTP_COOKIE_VARS["zUID"];
servlets coding is

Cookie c[]=req.getCookies();
		if(c!=null)
		{	out.println("hello1dwfsdfsd231");
			for(int i=0;i<c.length;i++)
			{
			login=c[i].getName();
			out.println(login);
			}
		}