java简单的获取windows系统网卡mac地址

package com.youkone.tool;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;

/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2006</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class MACAddress {
public MACAddress() {
}

public static String getMACAddress() {

String address = "";
  String os = System.getProperty("os.name");
  if (os != null && os.startsWith("Windows")) {
   try {
String command = "cmd.exe /c ipconfig /all";
Process p = Runtime.getRuntime().exec(command);
BufferedReader br =
   new BufferedReader(
  new InputStreamReader(p.getInputStream()));
String line;
while ((line = br.readLine()) != null) {
  if (line.indexOf("Physical Address") > 0) {
   int index = line.indexOf(":");
   index += 2;
   address = line.substring(index);
   break;
  }
}
br.close();
return address.trim();
   } catch (IOException e) {}
  }
  return address;
}

public static void main(String[] args) {
System.out.println(""+MACAddress.getMACAddress());
}
}