I have been trying to get a simple networking test program to run with no results.
Server:
import java.io.*; import java.net.*; public class ServerT
For what it's worth, your code works fine on my system.
I hate to say it, but it sounds like a firewall issue (which I know you've already triple-checked) or a Comcast issue, which is more possible than you might think. I'd test your ISP.