Module jakarta.concurrency

Package jakarta.enterprise.concurrent

Annotation Interface Schedule

@Documented
@Retention(RUNTIME)
@Target(ANNOTATION_TYPE)
public @interface Schedule

Defines schedules for scheduled asynchronous methods.

For the scheduled asychronous method to aim to run at a given day and time, all of the criteria specified by the Schedule must match or be disregarded according to the rules of each field.

Since:

3.1

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element	Description
String	cron	Cron expression following the rules of CronTrigger.
int[]	daysOfMonth	Days of the month on which the asynchronous method aims to run.
DayOfWeek[]	daysOfWeek	Days of the week on which the asynchronous method aims to run.
int[]	hours	Hours of the day at which the asynchronous method aims to run.
int[]	minutes	Minutes at which the asynchronous method aims to run.
Month[]	months	Months in which the asynchronous method aims to run.
int[]	seconds	Seconds at which the asynchronous method aims to run.
long	skipIfLateBy	Seconds after which an execution that is late to start should be skipped rather than starting it late.
String	zone	Time zone id, such as America/Chicago or America/Los_Angeles, which identifies the time zone of the schedule.

Element Details

cron

String cron

Cron expression following the rules of CronTrigger.

When a non-empty value is specified, it overrides all values that are specified for months(), daysOfMonth(), daysOfWeek(), hours(), minutes(), and seconds().

The default value is the empty string, indicating that no cron expression is to be used.

Returns:

cron expression indicating when to run the asynchronous method.

Default:

""

months

Month[] months

Months in which the asynchronous method aims to run.

The default value is an empty list, which means that the month is not included in the criteria for deciding when to run the asynchronous method.

Returns:

list of months in which the asynchronous method aims to run; An empty list disregards the month.

Default:

{}

daysOfMonth

int[] daysOfMonth

Days of the month on which the asynchronous method aims to run. Values can range from 1 to 31.

The default value is an empty list, which means that the day of the month is not included in the criteria for deciding when to run the asynchronous method.

Returns:

list of days of the month on which the asynchronous method aims to run; An empty list disregards the day of the month.

Default:

{}

daysOfWeek

DayOfWeek[] daysOfWeek

Days of the week on which the asynchronous method aims to run.

The default value is an empty list, which means that the day of the week is not included in the criteria for deciding when to run the asynchronous method.

Returns:

list of days of the week on which the asynchronous method aims to run; An empty list disregards the day of the week.

Default:

{}

hours

int[] hours

Hours of the day at which the asynchronous method aims to run.

Values can range from 0 to 23. A value of empty list indicates that the hour is not included in the criteria for deciding when to run the asynchronous method.

The default value is 0 (midnight).

Returns:

list of hours at which the asynchronous method aims to run; An empty list disregards the hour.

Default:

{0}

minutes

int[] minutes

Minutes at which the asynchronous method aims to run.

Values can range from 0 to 59. A value of empty list indicates that the minute is not included in the criteria for deciding when to run the asynchronous method.

The default value is 0 (at the start of the hour).

Returns:

list of minutes at which the asynchronous method aims to run; An empty list disregards the minutes.

Default:

{0}

seconds

int[] seconds

Seconds at which the asynchronous method aims to run.

Values can range from 0 to 59. A value of empty list causes the asynchronous method to raise IllegalArgumentException.

The default value is 0 (at the start of the minute).

Returns:

list of seconds at which the asynchronous method aims to run.

Default:

{0}

skipIfLateBy

long skipIfLateBy

Seconds after which an execution that is late to start should be skipped rather than starting it late.

Values must be greater than 0. The default value is 600 seconds (10 minutes). This differs from executions that are missed due to overlap, which are always skipped.

Returns:

the threshold for skipping executions that are late to start.

Default:

600L

zone

String zone

Time zone id, such as America/Chicago or America/Los_Angeles, which identifies the time zone of the schedule.

The default value of empty string indicates to use the default time zone for the system.

Default:

""