Annotation Interface Scheduled
Marks the method to be invoked periodically according to supplied cron expression.
Cron expression format:
Cron expression format:
<seconds> <minutes> <hours> <day-of-month> <month> <day-of-week> <year>
Order | Name | Supported values | Supported field format | Optional |
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1 | seconds | 0-59 | CONST, LIST, RANGE, WILDCARD, INCREMENT | false |
2 | minutes | 0-59 | CONST, LIST, RANGE, WILDCARD, INCREMENT | false |
3 | hours | 0-23 | CONST, LIST, RANGE, WILDCARD, INCREMENT | false |
4 | day-of-month | 1-31 | CONST, LIST, RANGE, WILDCARD, INCREMENT, ANY, LAST, WEEKDAY | false |
5 | month | 1-12 or JAN-DEC | CONST, LIST, RANGE, WILDCARD, INCREMENT | false |
6 | day-of-week | 1-7 or SUN-SAT | CONST, LIST, RANGE, WILDCARD, INCREMENT, ANY, NTH, LAST | false |
7 | year | 1970-2099 | CONST, LIST, RANGE, WILDCARD, INCREMENT | true |
Name | Regex format | Example | Description |
---|---|---|---|
CONST | \d+ | 12 | exact value |
LIST | \d+,\d+(,\d+)* | 1,2,3,4 | list of constants |
RANGE | \d+-\d+ | 15-30 | range of values from-to |
WILDCARD | \* | * | all values withing the field |
INCREMENT | \d+\/\d+ | 0/5 | inital number / increments, 2/5 means 2,7,9,11,16,... |
ANY | \? | ? | any day(apply only to day-of-week and day-of-month) |
NTH | \# | 1#3 | nth day of the month, 2#3 means third monday of the month |
LAST | \d*L(\+\d+|\-\d+)? | 3L-3 | last day of the month in day-of-month or last nth day in the day-of-week |
WEEKDAY | \# | 1#3 | nearest weekday of the nth day of month, 1W is the first monday of the week |
Cron expression | Description |
---|---|
* * * * * ? | Every second |
0/2 * * * * ? * | Every 2 seconds |
0 45 9 ? * * | Every day at 9:45 |
0 15 8 ? * MON-FRI | Every workday at 8:15 |
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Required Element Summary
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Optional Element Summary
Modifier and TypeOptional ElementDescriptionboolean
When true, next task is started even if previous didn't finish yet.
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Element Details
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value
String valueCron expression specifying period for invocation.- Returns:
- cron expression as string
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concurrentExecution
boolean concurrentExecutionWhen true, next task is started even if previous didn't finish yet.- Returns:
- true for allowing concurrent invocation
- Default:
true
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