All Implemented Interfaces:

java.lang.AutoCloseable
```
public abstract class GracefulScheduledExecutor
 implements AutoCloseable
                    
```
We use a GracefulScheduledExecutor because ScheduledExecutorService prevents the process from exiting.
The Java Virtual Machine runs until all threads that are not daemon threads have died. And Executors.defaultThreadFactory() creates each new thread as a non-daemon thread. However, there is an overload of Executors.newSingleThreadScheduledExecutor(); which takes a ThreadFactory as a parameter, if you care to venture in that direction.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description

Field Summary

Fields
Modifier and Type	Field	Description
`private final Boolean`	`isClosed`
`private Duration`	`initialDelay`
`private Duration`	`interval`
`private final ScheduledExecutorService`	`executor`

Constructor Summary

Constructors
Constructor	Description
`GracefulScheduledExecutor(Duration initialDelay, Duration interval, ScheduledExecutorService executor)`

Enum Constant Summary

Enum Constants
Enum Constant	Description

Method Summary

Modifier and Type	Method	Description
`final Boolean`	`isClosed()`
`final Duration`	`getInitialDelay()`
`final Unit`	`setInitialDelay(Duration initialDelay)`
`final Duration`	`getInterval()`
`final Unit`	`setInterval(Duration interval)`
`final ScheduledExecutorService`	`getExecutor()`
`final Unit`	`start(Duration initialDelay, Duration period, Function0<Unit> runnable)`	Starts the monitor at the given period with the specific runnable action Visible only for testing
`final Unit`	`start(Duration initialDelay, Duration period)`
`Unit`	`start(Long period, TimeUnit unit)`	Starts the reporter polling at the given period.
`Unit`	`start(Long initialDelay, Long period, TimeUnit unit, Runnable runnable)`	Starts the reporter polling at the given period with the specific runnable action.
`Unit`	`start(Long initialDelay, Long period, TimeUnit unit)`	Starts the reporter polling at the given period.
`final Unit`	`start()`
`abstract Unit`	`run()`
`Unit`	`close()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GracefulScheduledExecutor

GracefulScheduledExecutor(Duration initialDelay, Duration interval, ScheduledExecutorService executor)

Method Detail

isClosed
```
 final Boolean isClosed()
```

getInitialDelay
```
 final Duration getInitialDelay()
```

setInitialDelay

 final Unit setInitialDelay(Duration initialDelay)

getInterval
```
 final Duration getInterval()
```

setInterval

 final Unit setInterval(Duration interval)

getExecutor

 final ScheduledExecutorService getExecutor()

start
```
 final Unit start(Duration initialDelay, Duration period, Function0<Unit> runnable)
```
Starts the monitor at the given period with the specific runnable action Visible only for testing

start

 final Unit start(Duration initialDelay, Duration period)

start
```
 Unit start(Long period, TimeUnit unit)
```
Starts the reporter polling at the given period.

Parameters:

period - the amount of time between polls

unit - the unit for period

start
```
@Synchronized() Unit start(Long initialDelay, Long period, TimeUnit unit, Runnable runnable)
```
Starts the reporter polling at the given period with the specific runnable action. Visible only for testing.

start
```
@Synchronized() Unit start(Long initialDelay, Long period, TimeUnit unit)
```
Starts the reporter polling at the given period.

Parameters:

initialDelay - the time to delay the first execution

period - the amount of time between polls

unit - the unit for period and initialDelay

start
```
 final Unit start()
```

run
```
 abstract Unit run()
```

close
```
 Unit close()
```

Class GracefulScheduledExecutor

Nested Class Summary

Field Summary

Constructor Summary

Enum Constant Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

GracefulScheduledExecutor

Method Detail

isClosed

getInitialDelay

setInitialDelay

getInterval

setInterval

getExecutor

start

start

start

start

start

start

run

close