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.)

                @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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                Thread.sleep(CHECK_SLEEP_PERIOD); // will check CHECK_COUNT more times.
                final Iterator<TimerTask> iter = tasks.values().iterator();
                while (iter.hasNext()) {
                    final TimerTask task = iter.next();
                    task.cancel();
                }


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

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    }


    public static synchronized void cancel(Runnable task) {
        TimerTask ticket = TIMER_TASKS.remove(task);
        if (ticket != null) {
            ticket.cancel();
            CLOCK_DAEMON.purge();//remove cancelled TimerTasks
        }
    }


    public static void executeAfterDelay(final Runnable task, long redeliveryDelay) {

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    }


    public synchronized void cancel(Runnable task) {
        TimerTask ticket = timerTasks.remove(task);
        if (ticket != null) {
            ticket.cancel();
            timer.purge();//remove cancelled TimerTasks
        }
    }


    public synchronized void executeAfterDelay(final Runnable task, long redeliveryDelay) {

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    }
    
    public synchronized void cancel(Runnable task) {
      TimerTask ticket = timerTasks.remove(task);
        if (ticket != null) {
            ticket.cancel();
            timer.purge();//remove cancelled TimerTasks
        }
    }


    public synchronized void executeAfterDelay(final Runnable task, long redeliveryDelay) {

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    }


    public static synchronized void cancel(Runnable task) {
      TimerTask ticket = TIMER_TASKS.remove(task);
        if (ticket != null) {
            ticket.cancel();
            CLOCK_DAEMON.purge();//remove cancelled TimerTasks
        }
    }


    public static void executeAfterDelay(final Runnable task, long redeliveryDelay) {

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  public void modifiedService(ServiceReference reference, Object service) {
    System.out.println("modifiedService " + reference);
    if (references.containsKey(reference)) {
      TimerTask task = references.get(reference);
      task.cancel();
      task = new ServiceTimerTask((SchedulerCallback) service);
      references.put(reference, task);
      Long period = (Long) reference.getProperty(SchedulerCallback.SCHEDULE_PERIOD_IN_MILLISECOND);
      if (period == null) {
        period = DEFAULT_PERIOD_IN_MILLISECONDS;

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  public void removedService(ServiceReference reference, Object service) {
    System.out.println("removedService " + reference);
    if (references.containsKey(reference)) {
      TimerTask task = references.get(reference);
      task.cancel();
      timer.purge();
      references.remove(reference);
    }
  }

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        // Wait to ensure the cleanup can have occurred
        Thread.sleep(repeat);


        // Cancel the timer task
        task.cancel();


        // Test success - i.e. 50% of items have been removed
        int expectedEntries = NUM_ENTRIES / 2;
        assertEquals("Message store should contain " + expectedEntries,
                     expectedEntries,

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