com.google.common.util.concurrent

Interface FutureCallback<V>

@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

Modifier and Type	Method and 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(@NullableDecl
               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.