Quote

As i understand you, we can not flush() after closing. Am i right?

I was change my code and seem to work properly.

if(writer != null)
{
    try
    {
        writer.flush();
        writer.close();
        main.label1.setText("writer was closed");
    }
    catch (IOException ex)
    { 
        main.label1.setText("writer stay opened : " + ex.toString());
        ex.printStackTrace();
    }
}

And the result is

writer was closed

Now all my connection seem to be closed, and i can reconnect again to the server even if i not close my midlet.

But when i close and reopen my midlet (on third time), i still get exceptions :

javax.bluetooth.BluetoothConnectionException: Can not create RFCOMM connection

Why ?
I would like to try to connect to my server via my emulator but i can't find reference for that.
I use NetBeans 7.1

Sorry for my long questions. Thanks in advanced.

I am so sorry for that.

Quote

Thank you so much macosxnerd101 for you remain me do a little debugging.
I was insert some code to see the state of my connection after try to disconnecting my connection and before my midlet closed.
these are the result:

writer stay opened
input was closed
output was closed
connection was closed

I was try to move the

    if(writer != null)
    {
        try
        {
            writer.close();
            writer.flush();
        }
        catch (IOException ex)
        { 
        }
    }

after closing input and output. But StreamWriter stay left opened. And so i try to interupt the thread and the result does not changed.

how should i closing the StreamWriter?
Sorry for my english.
Thanks in advanced.

Okay, my exeptions above are when i run my app on emulator. Thats exceptions occured because (may be) my emulator can't access bluetooth on my computer.

If i run the app on my phone, i get this Exception :

javax.bluetooth.BluetoothConnectionException: Can not create RFCOMM connection

please help

Thanks a lot macosxnerd101, after put printStackTrace() i got this on my emulator :

javax.bluetooth.BluetoothConnectionException: IO error in btspp::connect\n
	at com.sun.jsr082.bluetooth.btspp.BTSPPConnectionImpl.doOpen(), bci=80
	at com.sun.jsr082.bluetooth.btspp.BTSPPConnectionImpl.<init>(), bci=59
	at com.sun.jsr082.bluetooth.btspp.BTSPPConnectionImpl.<init>(), bci=4
	at com.sun.jsr082.bluetooth.btspp.Protocol.clientConnection(), bci=19
	at com.sun.jsr082.bluetooth.BluetoothProtocol.openPrimImpl(), bci=52
	at com.sun.jsr082.bluetooth.BluetoothProtocol.openPrim(), bci=11
	at com.sun.midp.io.j2me.btspp.Protocol.openPrim(), bci=4
	at javax.microedition.io.Connector.open(), bci=47
 - way.connect(way.java:86)
 - way.run(way.java:43)
	at java.lang.Thread.run(Thread.java:721)