public void stopTrace(){
  traceEnabled=false;
  if (mqtt != null) {
    ;
    JOptionPane.showMessageDialog(frame,"Trace file mqe0.trc generated in the current directory","MQTT Trace",JOptionPane.INFORMATION_MESSAGE);
  }
}

public void stopTrace ( ) { traceEnabled = false ; if ( mqtt != null ) { ; JOptionPane . showMessageDialog ( frame , "Trace file mqe0.trc generated in the current directory" , "MQTT Trace" , JOptionPane . INFORMATION_MESSAGE ) ; } }
this method calls the mqtt stoptrace method to stop trace of the protocol flows
