Identify the COM port number and device address of Sun SPOT

Basically, I am using the spotfinder.exe which is a tool provided with Sun SPOT SDK to detect the COM port in use and device adddress of the connected Sun SPOT.
NOTE: Only one SPOT can be detected in this, I would like to change it later.

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package simpleexec;

import java.io.BufferedReader;
import java.io.InputStreamReader;

/**
*
* @author pdeng
*/
public class Main {

   /**
    * @param args the command line arguments
    */
   public static void main(String[] args) {
       // TODO code application logic here
       int portNumber = spotCOMPort();
       System.out.println(portNumber);
       String deviceMACAddress = getDeviceMACAddress();
       System.out.println(deviceMACAddress);
   }

   private static String getDeviceMACAddress() {
       try {
           String rawString = "";
           String line;
           Process p = Runtime.getRuntime().exec("C:\\Program Files\\Sun\\SunSPOT\\sdk\\bin\\spotfinder.exe -vv");
           BufferedReader input =
                   new BufferedReader(new InputStreamReader(p.getInputStream()));
           while ((line = input.readLine()) != null) {
               rawString = rawString + line;
           }
           input.close();
           String rawAddress = String.valueOf(rawString.subSequence(rawString.indexOf("00144F01") + 8, rawString.indexOf("00144F01") + 16));
           String MACAddress = "0014.4F01." + rawAddress.substring(0, 4) + "." + rawAddress.substring(4, 8);
           return MACAddress;
       } catch (Exception err) {
           err.printStackTrace();
           return "-1";
       }
   }

   private static int spotCOMPort() {
       try {
           String rawString = "";
           String line;
           Process p = Runtime.getRuntime().exec("C:\\Program Files\\Sun\\SunSPOT\\sdk\\bin\\spotfinder.exe -vv");
           BufferedReader input =
                   new BufferedReader(new InputStreamReader(p.getInputStream()));
           while ((line = input.readLine()) != null) {
               rawString = rawString + line;
           //System.out.println(line);
           }
           input.close();
           String comPort = String.valueOf(rawString.subSequence(rawString.indexOf("(COM") + 4, rawString.indexOf(")parsed")));
           return Integer.parseInt(comPort);
       } catch (Exception err) {
           err.printStackTrace();
           return -1;
       }
   }
}