Examples of java.util.TimerTask.cancel()

java.util.TimerTask.cancel()
Cancels this timer task. If the task has been scheduled for one-time execution and has not yet run, or has not yet been scheduled, it will never run. If the task has been scheduled for repeated execution, it will never run again. (If the task is running when this call occurs, the task will run to completion, but will never run again.)
Note that calling this method from within the run method of a repeating timer task absolutely guarantees that the timer task will not run again.
This method may be called repeatedly; the second and subsequent calls have no effect. @return true if this task is scheduled for one-time execution and hasnot yet run, or this task is scheduled for repeated execution. Returns false if the task was scheduled for one-time execution and has already run, or if the task was never scheduled, or if the task was already cancelled. (Loosely speaking, this method returns true if it prevents one or more scheduled executions from taking place.)

                Thread.sleep(1000);
            }
        }


        // Stop the timer, server should be up now
        timeoutTask.cancel();


        log.info("Geronimo server started");
    }


    protected String getFullClassName() {

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                @SuppressWarnings("unchecked")
                final ObjectPool<Object> pool = createProxy(ObjectPool.class, calledMethods);
                final TimerTask task = PoolUtils.checkMinIdle(pool, 1, CHECK_PERIOD); // checks minIdle immediately


                Thread.sleep(CHECK_SLEEP_PERIOD); // will check CHECK_COUNT more times.
                task.cancel();
                task.toString();


                final List<String> expectedMethods = new ArrayList<String>();
                for (int i=0; i < CHECK_COUNT; i++) {
                    expectedMethods.add("getNumIdle");

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                @SuppressWarnings("unchecked")
                final KeyedObjectPool<Object,Object> pool = createProxy(KeyedObjectPool.class, calledMethods);
                final TimerTask task = PoolUtils.checkMinIdle(pool, key, 1, CHECK_PERIOD); // checks minIdle immediately


                Thread.sleep(CHECK_SLEEP_PERIOD); // will check CHECK_COUNT more times.
                task.cancel();
                task.toString();


                final List<String> expectedMethods = new ArrayList<String>();
                for (int i=0; i < CHECK_COUNT; i++) {
                    expectedMethods.add("getNumIdle");

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        for (Iterator iterator = ids.iterator(); iterator.hasNext();) {
            Long idLong = (Long) iterator.next();
            WorkInfo workInfo = getWorkInfo(idLong);
            if (workInfo != null) {
                TimerTask timerTask = workInfo.getExecutorFeedingTimerTask();
                timerTask.cancel();
            }
        }
    }


    void addWorkInfo(WorkInfo worker) {

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        feAddrMapForRegisterReq.remove(contact);
        if (logger.isLoggable(Level.FINER)) {
                logger.finer("feAddrMapForRegisterReq : " + feAddrMapForRegisterReq);
        }
        TimerTask task = feAddrCleanupTasksMap.remove(contact);
        if(task != null && task.cancel()){
            timer.purge();
        }
    }


    private void storeFEAddrForRegisterReq(String contact, Address pathValue,

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        }
        if (contact == null || pathValue == null) {
            return;
        }
        TimerTask task = feAddrCleanupTasksMap.remove(contact);
        if(task != null && task.cancel()){
            timer.purge();
        }        
        feAddrMapForRegisterReq.put(contact, pathValue);
        if (logger.isLoggable(Level.FINER)) {
                logger.finer("feAddrMapForRegisterReq : " + feAddrMapForRegisterReq);

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    private void cancelAllTimerTasks() {
        try {
            int size = scheduledTimerTasks.size();
            for (int i = 0; i < size; i++) {
                TimerTask task = (TimerTask) scheduledTimerTasks.get(i);
                task.cancel();
            }
        } catch (Exception ex) {
        }  finally {
            scheduledTimerTasks.clear();
        }

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    private void cancelAllTimerTasks() {
        try {
            int size = scheduledTimerTasks.size();
            for (int i = 0; i < size; i++) {
                TimerTask task = (TimerTask) scheduledTimerTasks.get(i);
                task.cancel();
            }
        } catch (Exception ex) {
        }  finally {
            scheduledTimerTasks.clear();
        }

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    }
  }


  synchronized boolean endIdleAndCheckValid() {
    TimerTask tt = idle_timeout;
    if (tt != null) { tt.cancel(); }
    idle_timeout = null;
    
    if (isClosed()) {
      return false;
    } else {

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        TimerTask task = (TimerTask) serviceToTimerTaskMap.get(service);


        // if a timer task exists, cancel it first and create a new one
        if (task != null) {
            task.cancel();
        }


        task = new TimerTask() {
            public void run() {
                if (pollInProgress) {

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