Examples of java.util.Timer$FinalizerHelper

java.util.Timer
{@code Timer}s are used to schedule jobs for execution in a background process. A single thread is used for the scheduling and this thread has the option of being a daemon thread. By calling {@code cancel} you can terminate a{@code Timer} and its associated thread. All tasks which are scheduled to run afterthis point are cancelled. Tasks are executed sequentially but are subject to the delays from other tasks run methods. If a specific task takes an excessive amount of time to run it may impact the time at which subsequent tasks may run.
The {@code TimerTask} does not offer any guarantees about the real-time nature ofscheduling tasks as its underlying implementation relies on the {@code Object.wait(long)} method.
Multiple threads can share a single {@code Timer} without the need for their ownsynchronization.
A {@code Timer} can be set to schedule tasks either at a fixed rate orwith a fixed period. Fixed-period execution is the default.
The difference between fixed-rate and fixed-period execution is the following: With fixed-rate execution, the start time of each successive run of the task is scheduled in absolute terms without regard for when the previous task run actually took place. This can result in a series of bunched-up runs (one launched immediately after another) if busy resources or other system delays prevent the {@code Timer} from firing for an extended time.With fixed-period execution, each successive run of the task is scheduled relative to the start time of the previous run of the task, so two runs of the task are never fired closer together in time than the specified {@code period}. @see TimerTask @see java.lang.Object#wait(long)

    } catch (JMuleManagerException e) {
      e.printStackTrace();
      return;
    }
    _network_manager = (InternalNetworkManager) NetworkManagerSingleton.getInstance();
    need_more_peers_timer = new Timer( "Need more peers timer", true );
    need_more_peers_timer.scheduleAtFixedRate( new TimerTask() {
      @Override
      public void run() {
        Set<FileHash> file_hashes = session_list.keySet();
        List<FileHash> file_hashes_needed_help = new ArrayList<FileHash>();

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        }
        synchronized (this) {
            _accumulator += zoomIncrement;
            if (_zoomAccumulator != null)
                return;
            _zoomAccumulator = new Timer();
            _zoomAccumulator.schedule(new TimerTask() {
                public void run() {
                    int accuCopy;
                    synchronized (ViewTransform.this) {
                        accuCopy = _accumulator;

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      super.start();
    } catch (JMuleManagerException e) {
      e.printStackTrace();
      return ;
    }
    remove_temp_banned_peers_timer = new Timer( "Remove temp banned peers timer", true );
    remove_temp_banned_peers_timer.scheduleAtFixedRate(new TimerTask() {
      @Override
      public void run() {
        for(TemporaryBannedIP banned_ip : temporary_banned_peers) 
          if( ( System.currentTimeMillis() - banned_ip.getWhenBanned() ) >= banned_ip.getHowLong() )
            temporary_banned_peers.remove( banned_ip );
      }
    }, (long)1, REMOVE_TEMP_BANNED_PEERS_INTERVAL);
    
    remove_temp_banned_servers_timer = new Timer( "Remove temp banned servers timer", true);
    remove_temp_banned_servers_timer.scheduleAtFixedRate(new TimerTask() {
      @Override
      public void run() {
        for(TemporaryBannedIP banned_ip : temporary_banned_servers) 
          if( ( System.currentTimeMillis() - banned_ip.getWhenBanned() ) >= banned_ip.getHowLong() )

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            TimerTask task = new TimerTask() {
                public void run() {
                    getResendInitiator().run();
                }
            };
            timer = new Timer();
            timer.schedule(task, getBaseRetransmissionInterval(), getBaseRetransmissionInterval());  
        }
    }

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            destination = new RMDestination(this);
            destination.restore();
        }
        
        if (null == timer) {
            timer = new Timer();
        }
        
        if (!busLifeCycleListenerRegistered) {
            getBinding().getBus().getLifeCycleManager()
                .registerLifeCycleListener(new RMBusLifeCycleListener(getSource()));

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         // if there is a timer and no change about the refreshperiod, let it do its job
        if (_refreshPeriodChanged || _timer == null){
            _refreshPeriodChanged = false;
            if (_timer!=null) 
                _timer.cancel();
            _timer = new Timer(true); // do not block the application on exit
            _timer.schedule(new SceneTimerTask(),0,_refreshPeriod);
        }
    }

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      public void run() {
        interrupt();
      }
    };


    timer = new Timer("TimeLimitCursor", true);
    timer.schedule(tt, timeLimit);
  }

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    else if (syncDelay > 0L) {
      synchronized (syncTimerSemaphore) {
        // Sync in syncDelay milliseconds
        if (syncTimer == null) {
          // Create the syncTimer on a deamon thread
          syncTimer = new Timer("MemoryStore synchronization", true);
        }


        if (syncTimerTask != null) {
          logger.error("syncTimerTask is not null");
        }

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    }


  static public void main(String[] args) {
    Calendar c = Calendar.getInstance(); // contains current startup time
    //c.add(Calendar.SECOND, 30); // starting in 30 seconds
    Timer timer = new Timer();
    timer.schedule(new TestMetarEncoding(), c.getTime(), (long) 1000 * 120); // delay 2 min between runs
  }

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    }
  }


  // ÿ�����ϰ�ҹʱ���Զ�����
  private void manager() {
    Timer timer = new Timer();
    TimerTask tt2 = new TimerTask() {
      public void run() {
        loadNewWords();
      }
    };


    Date date = Config.update_keys_time();
    timer.schedule(tt2, date, Config.update_keys_interval() * 60000);


  }

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