ListenableFuture (Spring Framework 5.2.12.RELEASE API)

Type Parameters:
T - the result type returned by this Future's get method
All Superinterfaces:
Future<T>
All Known Implementing Classes:
AsyncResult, CompletableToListenableFutureAdapter, ListenableFutureAdapter, ListenableFutureTask, MonoToListenableFutureAdapter, SettableListenableFuture
```
public interface ListenableFuture<T>
extends Future<T>
```
Extend Future with the capability to accept completion callbacks. If the future has completed when the callback is added, the callback is triggered immediately.
Inspired by com.google.common.util.concurrent.ListenableFuture.
Since:
4.0
Author:
Arjen Poutsma, Sebastien Deleuze, Juergen Hoeller

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`void`	`addCallback(ListenableFutureCallback<? super T> callback)`	Register the given `ListenableFutureCallback`.
`void`	`addCallback(SuccessCallback<? super T> successCallback, FailureCallback failureCallback)`	Java 8 lambda-friendly alternative with success and failure callbacks.
`default CompletableFuture<T>`	`completable()`	Expose this `ListenableFuture` as a JDK `CompletableFuture`.

Methods inherited from interface java.util.concurrent.Future
cancel, get, get, isCancelled, isDone

- Method Detail
  - addCallback
```
void addCallback(ListenableFutureCallback<? super T> callback)
```
    Register the given ListenableFutureCallback.
    Parameters:
    callback - the callback to register
  - addCallback
```
void addCallback(SuccessCallback<? super T> successCallback,
                 FailureCallback failureCallback)
```
    Java 8 lambda-friendly alternative with success and failure callbacks.
    Parameters:
    successCallback - the success callback
    failureCallback - the failure callback
    Since:
    4.1
  - completable
```
default CompletableFuture<T> completable()
```
    Expose this ListenableFuture as a JDK CompletableFuture.
    Since:
    5.0