Bluetooth in java (Java Micro Edition forum at Coderanch)

Hi, I am making a project in java (J2SE) for transferring a file from my mobile phone to my PC. i've written a code in java, the code goes into infinite loop on reaching the acceptAndOpen(). I cant understand the problem
And also do i need to write any program for my mobile and store it to my mobile...
here's da code i am using... i also have one more code n it also has the same problem...

package com.btsendfile;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.microedition.io.*;
import java.io.*;
import javax.bluetooth.*; //comes from bluecove
//import javax.obex.*;
// uses the de.avetana OBEX library
import de.avetana.obexsolo.OBEXConnector;
import de.avetana.javax.obex.HeaderSet;
import de.avetana.javax.obex.Operation;
import de.avetana.javax.obex.ResponseCodes;
import de.avetana.javax.obex.ServerRequestHandler;
import de.avetana.javax.obex.SessionNotifier;
public class receive implements ActionListener, Runnable{
// Bluetooth singleton object
LocalDevice device;
DiscoveryAgent agent;
String HTBTurl = null;
Boolean mServerState = false; // stop is default state
Thread mServer = null;
String msgOut = "srv out msg";
String msgIn = "no msg rcv";
StreamConnectionNotifier btServerNotifier ;
UUID uuid = new UUID("9106", true);
JLabel spacerlabel = new JLabel(" ");
JButton startButton = new JButton("Start Server");
JTextArea textarea = new JTextArea("",20, 40);
JButton endButton = new JButton("End Server");
public receive(){
//Give it the Java look and feel
JFrame.setDefaultLookAndFeelDecorated(true);
JFrame frame = new JFrame("FileServer ");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JScrollPane scrollPane = new JScrollPane(textarea);
textarea.setEditable(false);
Container cp = frame.getContentPane();
cp.setLayout(new BoxLayout(cp, BoxLayout.Y_AXIS));
startButton.setAlignmentX(Component.CENTER_ALIGNMENT);
startButton.addActionListener(this);
cp.add(startButton);
endButton.setAlignmentX(Component.CENTER_ALIGNMENT);
endButton.addActionListener(this);
cp.add(endButton);
spacerlabel.setAlignmentX(Component.CENTER_ALIGNMENT);
cp.add(spacerlabel);
scrollPane.setAlignmentX(Component.CENTER_ALIGNMENT);
cp.add(scrollPane);
frame.pack();
frame.setVisible(true);
updateStatus("[server:] FileServer Application started");
updateStatus("[server:] Press the \"Start Server\" button to await for client devices");
private void startServer() {
if (mServer !=null)
return;
//start the server and receiver
mServer = new Thread(this);
mServer.start();
private void endServer() {
if (mServer == null)
return;
try {
mServer.join();
} catch (Exception ex) {};
mServer = null;
public void run(){
try {
//UUID uuid = new UUID("1106", true);
UUID uuid = new UUID("9106", true);
device = LocalDevice.getLocalDevice(); // obtain reference to singleton
device.setDiscoverable(DiscoveryAgent.GIAC); // set Discover mode to LIAC
}catch (Exception e)
{ System.err.println("Cant init set discvover");
e.printStackTrace();
String url = "btspp://localhost:" + uuid + ";name=BTTP;authenticate=false;master=false;encrypt=false";
//Bluecove does not support btgeop on server
// String url = "btgoep://localhost:" + uuid + ";name=BTTP;authenticate=false;master=false;encrypt=false";
// obtain connection and stream to this service
btServerNotifier = (StreamConnectionNotifier) Connector.open( url );
} catch ( Exception e) {
e.printStackTrace();
while (mServerState )
StreamConnection btConn = null;
try {
updateStatus("[server:] Now waiting for a client to connect");
btConn = btServerNotifier.acceptAndOpen();
} catch (IOException ioe) { }
if (btConn != null) processConnection(btConn);
void processConnection(StreamConnection conn) {
updateStatus("[server:] A client is now connected");
try {
DataInputStream in = conn.openDataInputStream();
// // write data into serial stream
// msgIn = in.readUTF();
char s ='a';
String h =null;
try {
while (s!='\n'){
s = in.readChar();
System.out.println(s);
h += s;
System.out.println(s); // typing the result
} catch (IOException ex) {
System.out.println("unable to handle incoming data");
ex.printStackTrace();
msgIn = h;
in.close();
System.out.print("The receive message is '" + msgIn + "'");
Thread.sleep(1000);
DataOutputStream out = conn.openDataOutputStream();
msgOut = msgIn +" srv reply";
System.out.print("Sending the message is '" + msgOut + "'");
// write data into serial stream
out.writeUTF( msgOut );
out.flush();
Thread.sleep(1000);
// finish, close output stream
out.close();
} catch (Exception e)
e.printStackTrace();
try {
conn.close();
updateStatus("[server:] Finished connection");
}catch (Exception e ){ }
public void actionPerformed(ActionEvent e) {
if ((e.getActionCommand()).equals("Start Server") ) {
startButton.setEnabled(false);
mServerState = true; // set server state started
startServer();
if ((e.getActionCommand()).equals("End Server") ) {
endButton.setEnabled(false);
startButton.setEnabled(true);
mServerState = false;
endServer();
public void updateStatus(String message){
textarea.append("\n" + message);
public static void main(String[] args) {
new receive();
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