JAVA获取及其mac地址

package cn.com;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.NetworkInterface;
import java.util.Enumeration;
import junit.framework.TestCase;
public class Test extends TestCase {
	    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();
		      }
		    } 
}

结果如下：

本机器的所有的网卡MAC发下:
6C-F0-49-71-5E-3C
6c-f0-49-71-5e-3c

获取本机IP的方法：

InetAddress addr = InetAddress.getLocalHost();
		String IP = addr.getHostAddress().toString();
		System.out.println("IP=" + IP);

结果：

IP=192.168.0.50