Trigger (Spring Framework 5.2.12.RELEASE API)

所有已知实现类:
CronTrigger, PeriodicTrigger
```
public interface Trigger
```
Common interface for trigger objects that determine the next execution time of a task that they get associated with.
从以下版本开始:
3.0
作者:
Juergen Hoeller
另请参阅:
TaskScheduler.schedule(Runnable, Trigger), CronTrigger

方法概要

所有方法实例方法抽象方法
修饰符和类型	方法	说明
`Date`	`nextExecutionTime(TriggerContext triggerContext)`	Determine the next execution time according to the given trigger context.

- 方法详细资料
  - nextExecutionTime
```
@Nullable
Date nextExecutionTime(TriggerContext triggerContext)
```
    Determine the next execution time according to the given trigger context.
    参数:
    triggerContext - context object encapsulating last execution times and last completion time
    返回:
    the next execution time as defined by the trigger, or null if the trigger won't fire anymore