How can I figure out all the IPs on my network devices

[coco]

Hi, I was trying to write a simple applet but I can't seem to figure out what library to import to figure out the IP address, OS, and other localhost system information.
If you know which ones could you tell me them and their respective calls or where to look?
Also how can I figure out all the IPs on my network and their respective devices?
Thanks.

[toby]

Code:

I think it's:
import java.net.*

But I can't remember much more than that..

[a_maged]

import java.net.*;
//to get the ip type

getInetAddress();

[CaptainMorgan]

Have you seen this? Go a little further down to where it says "getting host name/IP addresses".