public static void getAllMacAdress() {
        Enumeration<NetworkInterface> netInterfaces = null;
 
        try {
            // 获得所有网络接口
            netInterfaces = NetworkInterface.getNetworkInterfaces();
            while (netInterfaces.hasMoreElements()) {
                System.out
                        .println("==============================================");
                String mac = "";
                StringBuffer sb = new StringBuffer();
                NetworkInterface ni = netInterfaces.nextElement();
                System.out.println("DisplayName: " + ni.getDisplayName());
                System.out.println("Name: " + ni.getName());
 
                byte[] macs = ni.getHardwareAddress();
                // 该interface不存在HardwareAddress，继续下一次循环
                if (macs == null) {
                    continue;
                }
 
                for (int i = 0; i < macs.length; i++) {
                    mac = Integer.toHexString(macs[i] & 0xFF);
                    if (mac.length() == 1) {
                        mac = '0' + mac;
                    }
                    sb.append(mac + "-");
                }
                mac = sb.toString();
                mac = mac.substring(0, mac.length() - 1);
                System.out.println(mac);
 
                Enumeration<InetAddress> ips = ni.getInetAddresses();
                while (ips.hasMoreElements()) {
                    System.out.println("IP: "
                            + ips.nextElement().getHostAddress());
                }
            }
        } catch (SocketException e) {
            e.printStackTrace();
        }
    }

本方法需要使用使用jdk1.6