你如何使用Java获得以太网地址？

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.Enumeration;

public class EthAddress {
    public static void main(String[] args) {
        try {
            Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
            while (networkInterfaces.hasMoreElements()) {
                NetworkInterface networkInterface = networkInterfaces.nextElement();
                Enumeration<InetAddress> inetAddresses = networkInterface.getInetAddresses();
                while (inetAddresses.hasMoreElements()) {
                    InetAddress inetAddress = inetAddresses.nextElement();
                    if (inetAddress.getHostAddress().contains("eth")) {
                        System.out.println("Ethernet Address: " + inetAddress.getHostAddress());
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}