BluetoothStateException: Symbian OS Error= -44 !!!

Question

guys, i'm studying the code on how to communicate using a Bluetooth device, i'm using MIDP2.0 and J2ME's WTK 2.2... and I got this error after I run my application on my phone.. it works fine on the emulator
BluetoothStateException: Symbian OS Error = -44 : General : System ErrorI have no idea what's goin on in my code.. any help would be greatly appreciated..
Many THanks ...
below is my code
import java.io.*;
import javax.microedition.io.*;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
import javax.bluetooth.*;
public class BluetoothMIDlet extends MIDlet implements
    Runnable, CommandListener {
    public BluetoothMIDlet() {
         // Create a Form and add the Exit command to the Form
        Form f = new Form("Server");
        f.addCommand(new Command("Exit", Command.EXIT, 1));
        f.setCommandListener(this);
        Display.getDisplay(this).setCurrent(f);
        try {
            // Make the local device discoverable for the
            // client to locate
            f.append("getLocalDevice...");
            LocalDevice local = LocalDevice.getLocalDevice();
            if (!local.setDiscoverable(DiscoveryAgent.GIAC)) {
                f.append("Failed to change to the " +
                    "discoverable mode");
                return;
               f.append("LocalDevice... done.");
            // Create a server connection object to accept
            // a connection from a client
            StreamConnectionNotifier notifier =
                (StreamConnectionNotifier)
                Connector.open("btspp://localhost:" +
                    "86b4d249fb8844d6a756ec265dd1f6a3");
            f.append("StreamConnectionNotifier... done.");       
               System.out.println ("!!! Bluetooth is now running....");
            // Accept a connection from the client -
            // !!! Must have a client !!!
            //System.out.println ("\n... testing....");
            StreamConnection conn = notifier.acceptAndOpen();
            // Open the input to read data from
            InputStream in = conn.openInputStream();
            ByteArrayOutputStream out = new
                ByteArrayOutputStream();
            // Read the data sent from the client until
            // the end of stream
            int data;
            while ((data = in.read()) != -1) {
                out.write(data);
            // Add the text sent from the client to the Form
            f.append(out.toString());
            // Close all open resources
            in.close();
            conn.close();
            notifier.close();
        } catch (BluetoothStateException e) {
             System.out.println ("\n!!! BluetoothStateException");
            f.append("BluetoothStateException: ");
            f.append(e.getMessage());
        } catch (IOException e) {
             System.out.println ("\n!!!IOException");
            f.append("IOException: ");
            f.append(e.getMessage());
     * Starts a background thread when the MIDlet is
     * started.
    public void startApp()
        throws MIDletStateChangeException {
        new Thread(this).start();
    public void pauseApp() {}
    public void destroyApp(boolean unconditional) {}
    public void run() {}
     * Destroys the MIDlet when a Command occurs.
    public void commandAction(Command c, Displayable d) {
        notifyDestroyed();
}

Answer 1

-- ok, I think I know now,, the reason why it throws that exception is I need to "turn-ON" first my Bluetooth connectivity before I run my application...
now, my question is, can my application implicitly turn-ON the Bluetooth ?
thanks