import javax.microedition.midlet.MIDlet; import javax.microedition.midlet.MIDletStateChangeException; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.Command; import javax.microedition.lcdui.CommandListener; import javax.microedition.lcdui.List; import javax.microedition.lcdui.Choice; import javax.bluetooth.UUID; publicfinalclassBluetoothDemoextendsMIDletimplementsCommandListener {publicstaticfinal UUID RFCOMM_UUID = new UUID(0x0003); privatestaticfinal String SELECT = "Select"; privatestaticfinal String EXIT = "Exit"; privatefinal Command CMD_EXIT = new Command(EXIT,Command.EXIT, 1); privatefinal Command CMD_SLECT = new Command(SELECT, Command.SCREEN,2); privatestaticfinal String[] MENULABLES = {"Server","Client" }; privatefinal List menu =new List("Bluetooth Echo Demo", Choice.IMPLICIT,MENULABLES,null); private Display display= null; public BluetoothDemo() { menu.addCommand(CMD_EXIT); menu.addCommand(CMD_SLECT); menu.setCommandListener(this); } publicvoid startApp() { display =Display.getDisplay(this); display.setCurrent(menu); } protectedvoid destroyApp(boolean unconditional) { } protectedvoid pauseApp(){ } publicvoid commandAction(Command cmd, Displayable d) { if (cmd == CMD_EXIT) { destroyApp(true); notifyDestroyed(); return; }elseif (cmd == CMD_SLECT) { switch(menu.getSelectedIndex()) { case0: new Server(display); break; case1: new Client(display); break; }}}}

import javax.microedition.lcdui.Display; import javax.microedition.lcdui.TextBox; import javax.microedition.lcdui.TextField; import javax.bluetooth.LocalDevice; import javax.bluetooth.DiscoveryAgent; import javax.bluetooth.BluetoothStateException; import javax.microedition.io.Connector; import javax.microedition.io.StreamConnection; import javax.microedition.io.StreamConnectionNotifier; import java.io.InputStream; import java.io.OutputStream; import java.io.IOException; publicclassServerimplementsRunnable{private StreamConnectionNotifier notifier; private StreamConnection conn; private LocalDevice localDevice; privateboolean isInit; privatestaticfinal String SERVERURL = "btspp:/"+"/localhost:"+BluetoothDemo.RFCOMM_UUID; name=rfcommtest; authorize=false; private Display display =null; privatefinal Form form =new Form("Server..."); privatestaticfinal String SERVERMSG = "nHello Form Server..."; public Server(Display dis) { display = dis; display.setCurrent(form); isInit = false; Thread thread = new Thread(this); thread.start(); } publicvoid run() { if (!isInit) { try { conn = null; form.append("Searching for Client..."); localDevice =LocalDevice.getLocalDevice(); localDevice.setDiscoverable(DiscoveryAgent.GIAC); notifier =(StreamConnectionNotifier)Connector.open(SERVERURL); } catch(BluetoothStateException e) { form.append("BluetoothStateException: "+e.getMessage()); } catch(IOException e) { form.append("IOException: " +e.getMessage()); } isInit = true; } try { conn =notifier.acceptAndOpen(); OutputStream output =conn.openOutputStream(); output.write(SERVERMSG.length()); output.write(SERVERMSG.getBytes()); output.close(); InputStream inputStream= conn.openInputStream(); int length =inputStream.read(); byte[] data = null; data = newbyte[length]; length = 0; while (length !=data.length) { int ch = inputStream.read(data, length,data.length -length); if (ch == -1) { thrownew IOException("Can't read data"); } length += ch; } String msg = new String(data); form.append(msg); inputStream.close(); conn.close(); notifier.close(); } catch (Exception ex) { form.append("Bluetooth Server Running Error: " +ex); }}}

import javax.microedition.lcdui.Display; import javax.microedition.lcdui.TextBox; import javax.microedition.lcdui.TextField; import javax.microedition.lcdui.Alert; import javax.microedition.lcdui.AlertType; import javax.bluetooth.DiscoveryListener; import javax.bluetooth.DeviceClass; import javax.bluetooth.DiscoveryAgent; import javax.bluetooth.RemoteDevice; import javax.bluetooth.UUID; import javax.bluetooth.LocalDevice; import javax.bluetooth.ServiceRecord; import javax.microedition.io.StreamConnection; import javax.microedition.io.Connector; import java.io.OutputStream; import java.io.InputStream; import java.io.IOException; publicclassClientimplementsDiscoveryListener {private DiscoveryAgent discoveryAgent; private UUID[] uuidSet; private String serviceUrl; private Display display =null; private StreamConnection conn = null; privatefinal Form form =new Form("Client..."); privatestaticfinal String CLIENTMSG= "nHello From Client.."; public Client(Display dis){ display = dis; display.setCurrent(form); try { LocalDevice localDevice =LocalDevice.getLocalDevice(); discoveryAgent =localDevice.getDiscoveryAgent(); discoveryAgent.startInquiry(DiscoveryAgent.GIAC,this); form.append("nstart Inquiry..."); form.append("nSearching for device..."); } catch (Exception e) { form.append("exception"+e); } } publicvoid deviceDiscovered(RemoteDevice btDevice,DeviceClass cod) { try { form.append("nDevice Discovered"); form.append("nMajor Device Class: " +cod.getMajorDeviceClass() +"Minor Device Class: "+cod.getMinorDeviceClass()); form.append("nBluetooth Address: " +btDevice.getBluetoothAddress()); form.append("nBluetooth Friendly Name: " +btDevice.getFriendlyName(true)); uuidSet = new UUID[1]; uuidSet[0] =BluetoothDemo.RFCOMM_UUID; int searchID =discoveryAgent.searchServices(null,uuidSet,btDevice,this); } catch (Exception e) { form.append("nDevice Discovered Error: " + e); } } publicvoid inquiryCompleted(int discType) { form.append("nInquiryCompleted"); } publicvoid servicesDiscovered(int transID, ServiceRecord[] servRecord) { form.append("nServicesDiscovered"); for(int i=0;i

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