Bluetooth in java

[meg gupta]

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";   
  
        try{   
  
                 // 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();   
    }    
}  

[Ulf Dittmer]

Please do not post the same question to multiple forums: CarefullyChooseOneForum

Let's continue the discussion in this duplicate thread, where you have answers already.