Connection not found

Hi all,
I'm trying to transfer file from my pc to mobile using bluetooth application
take a look at my code

public void serviceSearchCompleted()
{
try
{
System.out.println("First Line");
Connection connection = Connector.open(UStr);
System.out.println("Connection obtained");

ClientSession cs = (ClientSession)connection;
HeaderSet hs = cs.createHeaderSet();

cs.connect(hs);
System.out.println("OBEX session created");

//System.out.println("Response code of the server after connect..." +hs.getResponseCode());

File file = new File("C:\\AddImage\\ICICI_Advertisement.gif");
InputStream is = new FileInputStream(file);
byte filebytes[] = new byte[is.available()];
is.read(filebytes);
is.close();

hs = cs.createHeaderSet();
hs.setHeader(HeaderSet.NAME, file.getName());
hs.setHeader(HeaderSet.TYPE, "image/jpeg");
hs.setHeader(HeaderSet.LENGTH, new Long(filebytes.length));

Operation putOperation = cs.put(hs);
System.out.println("Pushing file: " + file.getName());
System.out.println("Total file size: " + filebytes.length + " bytes");

OutputStream outputStream = putOperation.openOutputStream();
outputStream.write(filebytes);
System.out.println("File push complete");

outputStream.close();
putOperation.close();

cs.disconnect(null);

connection.close();
}
catch(Exception e)
{
System.out.println("connection:"+e);
}

}

it is trrowing the exception as:
javax.microedition.io.ConnectionNotFoundException

could anyone help me regarding this.........