how to reschedule Timer from within TimerTask run
basically what I want to do is to make a Timer that runs a specific TimerTask after x seconds, but then the TimerTask can reschedule the Timer to do the task after y seconds. Example is below, it gives me an error "Exception in thread "Timer-0" java.lang.IllegalStateException: Task already scheduled or cancelled" on line where I try to schedule this task in TimerTask run.
import java.util.Timer;
import java.util.TimerTask;
public class JavaReminder {
public JavaReminder(int seconds) {
Timer timer = new Timer();
timer.schedule(new RemindTask(timer, seconds), seconds*2000);
}
class RemindTask extends TimerTask {
Timer timer;
int seconds;
RemindTask(Timer currentTimer, int sec){
timer = currentTimer;
seconds = sec;
}
@Override
public void run() {
System.out.println("ReminderTask is completed by Java timer");
timer = new Timer();
timer.schedule(this, seconds*200);
System.out.println("scheduled");
}
}
public static void main(String args[]) {
System.out.println("Java timer is about to start");
JavaReminder reminderBeep = new JavaReminder(2);
System.out.println("Remindertask is scheduled with Java timer.");
}
}
Use new RemindTask instead of existing one.
It should be
timer.schedule(new RemindTask(timer, seconds), seconds*200);
instead of
timer.schedule(this, seconds*200);
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