code: public void setThreadName (final String threadName)
    {
      if (threadName == null || threadName.trim ().length () == 0)
      {
        throw new IllegalArgumentException ("Scheduler thread name cannot be empty.");
      }
  
      m_sThreadName = threadName;
    }
docs: <p>
  Set the name for the <code>{@link QuartzSchedulerThread}</code>.
  </p>
  
  @exception IllegalArgumentException
  if name is null or empty.