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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * This file is available under and governed by the GNU General Public
 * License version 2 only, as published by the Free Software Foundation.
 * However, the following notice accompanied the original version of this
 * file:
 *
 * Written by Doug Lea with assistance from members of JCP JSR-166
 * Expert Group and released to the public domain, as explained at
 * http://creativecommons.org/publicdomain/zero/1.0/
 */

package java.util.concurrent;
import java.util.*;

/**
 * Provides default implementations of {@link ExecutorService}
 * execution methods. This class implements the submit,
 * invokeAny and invokeAll methods using a
 * {@link RunnableFuture} returned by newTaskFor, which defaults
 * to the {@link FutureTask} class provided in this package.  For example,
 * the implementation of submit(Runnable) creates an
 * associated RunnableFuture that is executed and
 * returned. Subclasses may override the newTaskFor methods
 * to return RunnableFuture implementations other than
 * FutureTask.
 *
 *  Extension example. Here is a sketch of a class
 * that customizes {@link ThreadPoolExecutor} to use
 * a CustomTask class instead of the default FutureTask:
 *  
 {@code
 * public class CustomThreadPoolExecutor extends ThreadPoolExecutor {
 *
 *   static class CustomTask implements RunnableFuture {...}
 *
 *   protected  RunnableFuture newTaskFor(Callable c) {
 *       return new CustomTask(c);
 *   }
 *   protected  RunnableFuture newTaskFor(Runnable r, V v) {
 *       return new CustomTask(r, v);
 *   }
 *   // ... add constructors, etc.
 * }}
 *
 * @since 1.5
 * @author Doug Lea
 */
public abstract class AbstractExecutorService implements ExecutorService {

}