code: public Thread newThread(final Runnable runnable) {
  
          final Thread thread = new Thread(runnable);
  
          thread.setName("HSQLDB Timer @" + Integer.toHexString(hashCode()));
          thread.setDaemon(true);
  
          return thread;
      }
docs: Default ThreadFactory implementation. <p>
  
  Contructs a new Thread from the designated runnable, sets its
  name to "HSQLDB Timer @" + Integer.toHexString(hashCode()),
  and sets it as a daemon thread. <p>
  
  @param runnable used to construct the new Thread.
  @return a new Thread constructed from the designated runnable.