Package com.google.common.util.concurrent

Interface FutureCallback<V extends @Nullable Object>

@GwtCompatible
public interface FutureCallback<V extends @Nullable Object>

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

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

Method Detail

onSuccess

void onSuccess(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.