Trigger a run() method of Timer of Java manually

Question

So, I set my timer:

timer.scheduleAtFixedRate(new TimerTask()
{
    @Override
    public void run()
    {
        ...
    }
}, 5, 5);

so I want to trigger this run() for testing something, not wait until it gets triggered. Is there a way?

score 1 · Answer 1 · answered Jun 20 '14 at 13:50

1

Just create the Runnable object before (not using anonymus class) and use it to create a new Thread and then start it.

Something like this

   Runnable runnable = new Runnable() {
        @Override
        public void run() {
            /*impl*/
        }
    };

    new Thread(runnable).start();

answered Jun 20 '14 at 13:50

Ioan

5,152
3
31
50

1

Why is unnice ? I thought you want to test something. – Ioan Jun 20 '14 at 13:56

score 1 · Answer 2 · answered Jun 20 '14 at 13:58

1

Use a ScheduledExecutorService:

// single thread pool - you can use any other scheduled thread pool
ScheduledExecutorService ses = Executors.newSingleThreadScheduledExecutor();
ses.scheduleAtFixedRate(new Runnable() {
    @Override
    public void run() {
        /*impl*/
    }
}, 5, 5, TimeUnit.MILLISECONDS);

answered Jun 20 '14 at 13:58

Jean Logeart

52,687
11
83
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1

As a side note:``ScheduledExecutorService`` is to be preferred over ``Timer``: http://stackoverflow.com/questions/409932/java-timer-vs-executorservice – Jean Logeart Jun 20 '14 at 14:01

ceph3us · Accepted Answer · 2018-06-01T11:16:55.350

1

why using executors or threads? its not enough* to run method? :)

// define task 
TimerTask = tt new TimerTask()
{
    @Override
    public void run()
    {
        ...
    }
};


// schedule 
timer.scheduleAtFixedRate(tt,int,int);

// run as any other method :) 
tt.run();

*when run is not enought? when we can't or don't want to block the current thread!

edited Jun 01 '18 at 11:16

answered Jun 01 '18 at 09:35

ceph3us

7,326
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Trigger a run() method of Timer of Java manually

3 Answers3