Quartz: Exploring CronTrigger

CronTrigger is used to fire a job using Unix 'cron-like' schedule definitions.

As you see below image CronTrigger is an interface which extends Trigger interface.

Cron Expressions

Cron expression are used to specify complex time combinations such as "At 8:00pm every Monday through Sunday" or "At 1:30pm every last Sunday of the month".

Example

0 0 12 * * ? : Used to fire the event at 12PM on every day.

0/3 * * * * ? : Fire the event for every 3 seconds

I would recommend you to go through my below tutorial to get more idea about cron expressions.

https://self-learning-java-tutorial.blogspot.com/2014/10/cron-triggers.html

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