FutureCallback (Guava: Google Core Libraries for Java 30.1-jre API)

```
@GwtCompatible
public interface FutureCallback<V>
```
A callback for accepting the results of a Future computation asynchronously.
To attach to a ListenableFuture use Futures.addCallback(com.google.common.util.concurrent.ListenableFuture<V>, com.google.common.util.concurrent.FutureCallback<? super V>, java.util.concurrent.Executor).

Since:

10.0

Author:

Anthony Zana

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`onFailure(Throwable t)`	Invoked when a `Future` computation fails or is canceled.
`void`	`onSuccess(@Nullable V result)`	Invoked with the result of the `Future` computation when it is successful.

- Method Detail
  - onSuccess
```
void onSuccess(@Nullable V result)
```
    Invoked with the result of the Future computation when it is successful.
  - onFailure
```
void onFailure(Throwable t)
```
    Invoked when a Future computation fails or is canceled.
    If the future's get method throws an ExecutionException, then the cause is passed to this method. Any other thrown object is passed unaltered.