Java得到mac地址

/*
* GetMacAddress .java
*
* description:get Mac addreess
*
* @author hadeslee
*
* Created on 2007-9-27, 9:11:15
*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package test2; 
import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStreamReader; 
/**
*
*/
public class GetMacAddress {
public static String getMACAddress() {
String address = ""; 
String os = System.getProperty("os.name"); 
System.out.println(os); 
if (os != null && os.startsWith("Windows")) {
try {
ProcessBuilder pb = new ProcessBuilder("ipconfig", "/all"); 
Process p = pb.start(); 
BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream())); 
String line; 
while ((line = br.readLine()) != null) {
if (line.indexOf("Physical Address") != -1) {
int index = line.indexOf(":"); 
address = line.substring(index+1); 
break; 
}
}
br.close(); 
return address.trim(); 
} catch (IOException e) {
}
}
return address; 
}
public static void main(String[] args) {
System.out.println("" + Test.getMACAddress()); 
}
}