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