[Jason-users] Create a timer based on seconds in Cartago

[Burak K. <bbu...@gm...>]

Dear all,

I am trying to create a timer that counts based on seconds. However, I am
getting this error;








*java.lang.IllegalMonitorStateException at
java.base/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.signalAll(AbstractQueuedSynchronizer.java:1487)
at cartago.Artifact.commitObsStateChangesAndSignal(Artifact.java:573)at
cartago.Artifact.signal(Artifact.java:637) at
example_JaCaMo.MyTimer.access$000(MyTimer.java:11) at
example_JaCaMo.MyTimer$1.run(MyTimer.java:29) at
java.base/java.util.TimerThread.mainLoop(Timer.java:556) at
java.base/java.util.TimerThread.run(Timer.java:506)*

My code is simply like this:





























*public class MyTimer extends Artifact { void init() {
defineObsProperty("mytimer", 0); timer_creation(); } void timer_creation()
{   this.beginExternalSession(); Timer timer = new Timer(); TimerTask task
= new TimerTask(){    private int i = 0;    public void run(){        if (i
<= 30) {        signal("timerEnd");        System.out.println(i);
      }    }}; timer.scheduleAtFixedRate(task, 0, 1000); //1000ms = 1sec
this.endExternalSession(true); }}*

How can I tackle this problem?

Thank you.

Best regards.



-- 

*Burak KARADUMAN,*
Ph.D. Student at the University of Antwerp & Flanders Make,
Modeling Intelligent Complex Software & Systems (MICSS-Lab),
*G236, Department of **Computer Science**, Faculty of Science, Campus
Middelheim,*
Middelheimlaan 1, 2020 Antwerp, Belgium