JDK6新特性,JAVA获得机器MAC地址的方法

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。

1. importjava.io.BufferedReader;
2. importjava.io.InputStreamReader;
3. importjava.net.NetworkInterface;
4. importjava.util.Enumeration;
6. /**
7. *JDK6新特性,JAVA获得机器MAC地址的方法
8. *
9. *@author老紫竹(Java世纪网,java2000.net)
10. */
11. publicclassTest{
12. //返回一个字节的十六进制字符串
13. staticStringhexByte(byteb){
14. Strings="000000"+Integer.toHexString(b);
15. returns.substring(s.length()-2);
16. }
18. publicstaticvoidmain(String[]args)throwsException{
19. System.out.println("本机器的所有的网卡MAC发下:");
20. getMacOnWindow();
21. getMac();
22. }
24. /**
25. *JDK1.6新特性获取网卡MAC地址
26. */
27. publicstaticvoidgetMac(){
28. try{
29. Enumeration<NetworkInterface>el=NetworkInterface.getNetworkInterfaces();
30. while(el.hasMoreElements()){
31. byte[]mac=el.nextElement().getHardwareAddress();
32. if(mac==null)
33. continue;
35. StringBuilderbuilder=newStringBuilder();
36. for(byteb:mac){
37. builder.append(hexByte(b));
38. builder.append("-");
39. }
40. builder.deleteCharAt(builder.length()-1);
41. System.out.println(builder);
43. }
44. }catch(Exceptionexception){
45. exception.printStackTrace();
46. }
47. }
49. /**
50. *原始的获取网卡MAC地址
51. */
52. publicstaticvoidgetMacOnWindow(){
53. try{
54. Stringmac=null;
55. Processprocess=Runtime.getRuntime().exec("ipconfig/all");
56. BufferedReaderbuffer=newBufferedReader(newInputStreamReader(process.getInputStream()));
57. for(Stringline=buffer.readLine();line!=null;line=buffer.readLine()){
58. intindex=line.indexOf("PhysicalAddress");
59. if(index<=0){
60. continue;
61. }
62. mac=line.substring(index+36);
63. break;
64. }
65. buffer.close();
66. process.waitFor();
67. System.out.println(mac);
68. }catch(Exceptionexception){
69. exception.printStackTrace();
70. }
71. }
72. }