I have some entities in database. Every entity have a field called time.
the time field has been entered from user side. I want to call a method on that time.
For example imagine a system that will call to your phone in specific time that you have set before.
I know A solution is to use a tread that checks the time field in database every second, but What is the best solution?
Have a look at
Spring-Scheduler here. There you can define your own
Scheduler instance. This has a method called
schedule() which can be called with a specific task and a
(Cron)Trigger. On the time the user saves the entity with the given time you can create a new
(Cron)Trigger to schedule the task.
scheduler.schedule(task, new CronTrigger("0 15 9-17 * * MON-FRI"));