http://www.guj.com.br/posts/list/5.java JForum - http://www.jforum.net
Eu estou rodando este programa:

[code]import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;

public class MacAddress{

public static void main(String[] args){

InetAddress ip;
try {

ip = InetAddress.getLocalHost();
System.out.println("Current IP address : " + ip.getHostAddress());

NetworkInterface network = NetworkInterface.getByInetAddress(ip);

byte[] mac = network.getHardwareAddress();

System.out.print("Current MAC address : ");

StringBuilder sb = new StringBuilder();
for (int i = 0; i < mac.length; i++) {
sb.append(String.format("%02X%s", mac[i], (i < mac.length - 1) ? "-" : ""));
}
System.out.println(sb.toString());

} catch (UnknownHostException e) {

e.printStackTrace();

} catch (SocketException e){

e.printStackTrace();

}

}

}[/code]

no meu windows xp o resultado é exibido normal.
[b]Current IP address : tal...
Current MAC address : tal...[/b]

quando rodo no notebook com windows 7, o endereço mac não aparece. só o ip. Alguém sabe por que?
[b]Current IP address : tal...
Current MAC address : [color=red]NÃO É MOSTRADO[/color]...[/b]]]> http://www.guj.com.br/prepost/263952/1380949/problema-endereco-mac http://www.guj.com.br/prepost/263952/1380949/problema-endereco-mac GMT