케찹만땅

import java.io.*;


public class MacAddressTest { 
  public static void main(String args[]) throws Exception { 
    Process process = Runtime.getRuntime().exec("ipconfig /all"); 
    
    InputStream standardOutput = process.getInputStream(), standardError = 
    process.getErrorStream() ; 
    String output = ""; 
    int c;
    while ((c = standardOutput.read()) != -1) { 
      output = output + new Character((char)c).toString(); 
    } 
    while ((c = standardError.read()) != -1) 
      standardOutput.close(); 

      standardError.close(); 


      BufferedReader br = new BufferedReader(new StringReader(output)); 


      String line = null; 
      while ((line = br.readLine()) != null) { 
        if (line.trim().startsWith("Physical Address")) { 
          String mac = line.substring(line.indexOf(":")+1,
                       line.length()).trim();           
          System.out.println("MAC Address : " + mac); 
        } 
      } 
  } 
}