A J2SE 1.4 Question  :  Someboby please help.

Hello, I have a question about The new class NetworkInterface.java in the net package. I am a freshman in computer science and a newly sun certified programmer. I am writing a class to retrieve a Network' s public (ip)address from the inside (from a local machine). So I 'd like to know what is a network interface if that is what the class represents and if that could help me do the job please put me in the right direction.
Thanks.

I do not need the localhost's ip. I am not trying to
get my computer's ip assigned by the network's
firewall/NAT. What I want is the Network's PUBLIC ip
by which it connects to the Internet( or by which the
Internet connects to it) As far as I know, the only sure way to do this is to ask your network's administrator.
If you knew how many routers there were between you and the firewall you could parse the output of traceroute, but if you knew that much detail about your network, you would probably already know the address in question.

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