import java.net.InetAddress;
import java.net.UnknownHostException;
public class ok
{
public static void main(String[] args) {
InetAddress inet = null;
try
{
inet = InetAddress.getLocalHost();
System.out.println( inet.getHostAddress() ); // IP-Adresse
}
catch (Exception e)
{
System.out.println("nicht möglich");
}
}
}