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;

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());
}
}