/* * Copyright (C) 2011 The Guava Authors * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.google.common.util.concurrent; import com.google.common.annotations.Beta; import java.util.concurrent.ExecutionException; import java.util.concurrent.Future; /** * A callback for accepting the results of a {@link java.util.concurrent.Future} * computation asynchronously. * *
To attach to a {@link ListenableFuture} use {@link Futures#addCallback}.
*
* @author Anthony Zana
* @since 10.0
*/
@Beta
public interface FutureCallback If the future's {@link Future#get() get} method throws an {@link
* ExecutionException}, then the cause is passed to this method. Any other
* thrown object is passed unaltered.
*/
void onFailure(Throwable t);
}