A concrete {@link Trigger} that is used to fire a {@link org.quartz.JobDetail} at given moments in time, defined with Unix 'cron-like' definitions.
For those unfamiliar with "cron", this means being able to create a firing schedule such as: "At 8:00am every Monday through Friday" or "At 1:30am every last Friday of the month".
The format of a "Cron-Expression" string is documented on the {@link org.quartz.CronExpression} class.
Here are some full examples:
| Expression | Meaning | |
|---|---|---|
"0 0 12 * * ?" | Fire at 12pm (noon) every day | |
"0 15 10 ? * *" | Fire at 10:15am every day | |
"0 15 10 * * ?" | Fire at 10:15am every day | |
"0 15 10 * * ? *" | Fire at 10:15am every day | |
"0 15 10 * * ? 2005" | Fire at 10:15am every day during the year 2005 | |
"0 * 14 * * ?" | Fire every minute starting at 2pm and ending at 2:59pm, every day | |
"0 0/5 14 * * ?" | Fire every 5 minutes starting at 2pm and ending at 2:55pm, every day | |
"0 0/5 14,18 * * ?" | Fire every 5 minutes starting at 2pm and ending at 2:55pm, AND fire every 5 minutes starting at 6pm and ending at 6:55pm, every day | |
"0 0-5 14 * * ?" | Fire every minute starting at 2pm and ending at 2:05pm, every day | |
"0 10,44 14 ? 3 WED" | Fire at 2:10pm and at 2:44pm every Wednesday in the month of March. | |
"0 15 10 ? * MON-FRI" | Fire at 10:15am every Monday, Tuesday, Wednesday, Thursday and Friday | |
"0 15 10 15 * ?" | Fire at 10:15am on the 15th day of every month | |
"0 15 10 L * ?" | Fire at 10:15am on the last day of every month | |
"0 15 10 ? * 6L" | Fire at 10:15am on the last Friday of every month | |
"0 15 10 ? * 6L" | Fire at 10:15am on the last Friday of every month | |
"0 15 10 ? * 6L 2002-2005" | Fire at 10:15am on every last friday of every month during the years 2002, 2003, 2004 and 2005 | |
"0 15 10 ? * 6#3" | Fire at 10:15am on the third Friday of every month |
Pay attention to the effects of '?' and '*' in the day-of-week and day-of-month fields!
NOTES:
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