JDK6新特性,JAVA获得机器MAC地址的方法

import java.io.BufferedReader; import java.io.InputStreamReader; import java.net.NetworkInterface; import java.util.Enumeration; /**  * JDK6新特性,JAVA获得机器MAC地址的方法  *  * @author 老紫竹(Java世纪网,java2000.net)  */ public class Test {   // 返回一个字节的十六进制字符串   static String hexByte(byte b) {     String s = "000000" + Integer.toHexString(b);     return s.substring(s.length() - 2);   }   public static void main(String[] args) throws Exception {     System.out.println("本机器的所有的网卡MAC发下:");     getMacOnWindow();     getMac();   }   /**    * JDK1.6新特性获取网卡MAC地址    */   public static void getMac() {     try {       Enumeration<NetworkInterface> el = NetworkInterface.getNetworkInterfaces();       while (el.hasMoreElements()) {         byte[] mac = el.nextElement().getHardwareAddress();         if (mac == null)           continue;         StringBuilder builder = new StringBuilder();         for (byte b : mac) {           builder.append(hexByte(b));           builder.append("-");         }         builder.deleteCharAt(builder.length() - 1);         System.out.println(builder);       }     } catch (Exception exception) {       exception.printStackTrace();     }   }   /**    * 原始的获取网卡MAC地址    */   public static void getMacOnWindow() {     try {       String mac = null;       Process process = Runtime.getRuntime().exec("ipconfig /all");       BufferedReader buffer = new BufferedReader(new InputStreamReader(process.getInputStream()));       for (String line = buffer.readLine(); line != null; line = buffer.readLine()) {         int index = line.indexOf("Physical Address");         if (index <= 0) {           continue;         }         mac = line.substring(index + 36);         break;       }       buffer.close();       process.waitFor();       System.out.println(mac);     } catch (Exception exception) {       exception.printStackTrace();     }   } } 

?这个代码包含了以前常见的用Runtime实现的方法，已经使用JDK1.6新特性实现的方法。