check ip addresses in network code example

Example 1: what use of ip addresses

import java.net.InetAddress;
import java.net.UnknownHostException;
public class FindIPaddress {
	public static void main(String[] args) throws UnknownHostException {
		InetAddress a = InetAddress.getLocalHost();
		System.out.println(a.getHostAddress());	
	}
}

Example 2: how to find the ip address of a remote device on network

Server:  ns.indiana.edu
  Address:  129.79.1.1

  Name:    indiana.edu
  Address:  129.79.1.61