public long getFrequency() 
{
            return frequency;
}

 public  void run() 
{
            while (!done) {
                try {
                    Thread.sleep(frequency);
                } catch (InterruptedException e) {
                    break;
                }
                updateStatus();
            }
}

 public  void setFrequency(long newFrequency) 
{
            frequency = newFrequency;
}

 public  void stop() 
{
            done = true;
}