java.lang.Object
- org.springframework.scheduling.concurrent.ScheduledExecutorTask

```
public class ScheduledExecutorTask
extends Object
```
JavaBean that describes a scheduled executor task, consisting of the Runnable and a delay plus period. The period needs to be specified; there is no point in a default for it.
The ScheduledExecutorService does not offer more sophisticated scheduling options such as cron expressions. Consider using ThreadPoolTaskScheduler for such needs.
Note that the ScheduledExecutorService mechanism uses a Runnable instance that is shared between repeated executions, in contrast to Quartz which creates a new Job instance for each execution.
从以下版本开始:
2.0
作者:
Juergen Hoeller
另请参阅:
ScheduledExecutorService.scheduleWithFixedDelay(java.lang.Runnable, long, long, java.util.concurrent.TimeUnit), ScheduledExecutorService.scheduleAtFixedRate(java.lang.Runnable, long, long, java.util.concurrent.TimeUnit)

构造器概要

构造器
构造器	说明
`ScheduledExecutorTask()`	Create a new ScheduledExecutorTask, to be populated via bean properties.
`ScheduledExecutorTask(Runnable executorTask)`	Create a new ScheduledExecutorTask, with default one-time execution without delay.
`ScheduledExecutorTask(Runnable executorTask, long delay)`	Create a new ScheduledExecutorTask, with default one-time execution with the given delay.
`ScheduledExecutorTask(Runnable executorTask, long delay, long period, boolean fixedRate)`	Create a new ScheduledExecutorTask.

方法概要

所有方法实例方法具体方法
修饰符和类型	方法	说明
`long`	`getDelay()`	Return the delay before starting the job for the first time.
`long`	`getPeriod()`	Return the period between repeated task executions.
`Runnable`	`getRunnable()`	Return the Runnable to schedule as executor task.
`TimeUnit`	`getTimeUnit()`	Return the time unit for the delay and period values.
`boolean`	`isFixedRate()`	Return whether to schedule as fixed-rate execution.
`boolean`	`isOneTimeTask()`	Is this task only ever going to execute once?
`void`	`setDelay(long delay)`	Set the delay before starting the task for the first time, in milliseconds.
`void`	`setFixedRate(boolean fixedRate)`	Set whether to schedule as fixed-rate execution, rather than fixed-delay execution.
`void`	`setPeriod(long period)`	Set the period between repeated task executions, in milliseconds.
`void`	`setRunnable(Runnable executorTask)`	Set the Runnable to schedule as executor task.
`void`	`setTimeUnit(TimeUnit timeUnit)`	Specify the time unit for the delay and period values.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 构造器详细资料
  - ScheduledExecutorTask
```
public ScheduledExecutorTask()
```
    Create a new ScheduledExecutorTask, to be populated via bean properties.
    另请参阅:
    setDelay(long), setPeriod(long), setFixedRate(boolean)
  - ScheduledExecutorTask
```
public ScheduledExecutorTask(Runnable executorTask)
```
    Create a new ScheduledExecutorTask, with default one-time execution without delay.
    参数:
    executorTask - the Runnable to schedule
  - ScheduledExecutorTask
```
public ScheduledExecutorTask(Runnable executorTask,
                             long delay)
```
    Create a new ScheduledExecutorTask, with default one-time execution with the given delay.
    参数:
    executorTask - the Runnable to schedule
    delay - the delay before starting the task for the first time (ms)
  - ScheduledExecutorTask
```
public ScheduledExecutorTask(Runnable executorTask,
                             long delay,
                             long period,
                             boolean fixedRate)
```
    Create a new ScheduledExecutorTask.
    参数:
    executorTask - the Runnable to schedule
    delay - the delay before starting the task for the first time (ms)
    period - the period between repeated task executions (ms)
    fixedRate - whether to schedule as fixed-rate execution
- 方法详细资料
  - setRunnable
```
public void setRunnable(Runnable executorTask)
```
    Set the Runnable to schedule as executor task.
  - getRunnable
```
public Runnable getRunnable()
```
    Return the Runnable to schedule as executor task.
  - setDelay
```
public void setDelay(long delay)
```
    Set the delay before starting the task for the first time, in milliseconds. Default is 0, immediately starting the task after successful scheduling.
  - getDelay
```
public long getDelay()
```
    Return the delay before starting the job for the first time.
  - setPeriod
```
public void setPeriod(long period)
```
    Set the period between repeated task executions, in milliseconds.
    Default is -1, leading to one-time execution. In case of a positive value, the task will be executed repeatedly, with the given interval in-between executions.
    Note that the semantics of the period value vary between fixed-rate and fixed-delay execution.
    Note: A period of 0 (for example as fixed delay) is not supported, simply because java.util.concurrent.ScheduledExecutorService itself does not support it. Hence a value of 0 will be treated as one-time execution; however, that value should never be specified explicitly in the first place!
    另请参阅:
    setFixedRate(boolean), isOneTimeTask(), ScheduledExecutorService.scheduleWithFixedDelay(Runnable, long, long, java.util.concurrent.TimeUnit)
  - getPeriod
```
public long getPeriod()
```
    Return the period between repeated task executions.
  - isOneTimeTask
```
public boolean isOneTimeTask()
```
    Is this task only ever going to execute once?
    返回:
    true if this task is only ever going to execute once
    另请参阅:
    getPeriod()
  - setTimeUnit
```
public void setTimeUnit(TimeUnit timeUnit)
```
    Specify the time unit for the delay and period values. Default is milliseconds (TimeUnit.MILLISECONDS).
    另请参阅:
    TimeUnit.MILLISECONDS, TimeUnit.SECONDS
  - getTimeUnit
```
public TimeUnit getTimeUnit()
```
    Return the time unit for the delay and period values.
  - setFixedRate
```
public void setFixedRate(boolean fixedRate)
```
    Set whether to schedule as fixed-rate execution, rather than fixed-delay execution. Default is "false", that is, fixed delay.
    See ScheduledExecutorService javadoc for details on those execution modes.
    另请参阅:
    ScheduledExecutorService.scheduleWithFixedDelay(java.lang.Runnable, long, long, java.util.concurrent.TimeUnit), ScheduledExecutorService.scheduleAtFixedRate(java.lang.Runnable, long, long, java.util.concurrent.TimeUnit)
  - isFixedRate
```
public boolean isFixedRate()
```
    Return whether to schedule as fixed-rate execution.

类 ScheduledExecutorTask

构造器概要

方法概要

从类继承的方法 java.lang.Object

构造器详细资料

ScheduledExecutorTask

ScheduledExecutorTask

ScheduledExecutorTask

ScheduledExecutorTask

方法详细资料

setRunnable

getRunnable

setDelay

getDelay

setPeriod

getPeriod

isOneTimeTask

setTimeUnit

getTimeUnit

setFixedRate

isFixedRate