Annotation Type Scheduled
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@Retention(RUNTIME) @Target(METHOD) public @interface Scheduled
Marks the method to be invoked periodically according to supplied cron expression.
Cron expression format:<seconds> <minutes> <hours> <day-of-month> <month> <day-of-week> <year>
Cron expression fields Order Name Supported values Supported field format Optional 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
Field formats 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
Examples 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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Optional Element Summary
Optional Elements Modifier and Type Optional Element Description boolean
concurrentExecution
When true, next task is started even if previous didn't finish yet.
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Element Detail
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value
String value
Cron expression specifying period for invocation.- Returns:
- cron expression as string
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