Identifier un poste sur un LAN avec sa Mac Address

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;
 
/**
 * Identifier un poste sur un LAN avec sa Mac Address
 * @author fobec 2011
 */
public class NetworkHardware {
 
    public static String getMacAddress() {
 
        try {
            InetAddress ia = InetAddress.getLocalHost();
 
            System.out.println("nom sur le reseau : "   ia.getCanonicalHostName());
            System.out.println("adresse ip : "   ia.getHostAddress());
            System.out.println("reseau local : "   ia.isSiteLocalAddress());
 
            NetworkInterface ni = NetworkInterface.getByInetAddress(ia);
            System.out.println("interface reseau : "   ni.getDisplayName());
            byte[] mac = ni.getHardwareAddress();
 
            StringBuilder macaddress = new StringBuilder();
            for (int i = 0; i < mac.length; i  ) {
                macaddress.append(String.format("X%s", mac[i], (i < mac.length - 1) ? "-" : ""));
            }
            return macaddress.toString();
        } catch (UnknownHostException e) {
            e.printStackTrace();
        } catch (SocketException e) {
            e.printStackTrace();
        }
        return "";
    }
 
    public static void main(String args[]) {
        System.out.println("la Mac adresse du poste : "   NetworkHardware.getMacAddress());
    }
}