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| 1 | /* | ||
| 2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 3 | * | ||
| 4 | * This code is free software; you can redistribute it and/or modify it | ||
| 5 | * under the terms of the GNU General Public License version 2 only, as | ||
| 6 | * published by the Free Software Foundation. Oracle designates this | ||
| 7 | * particular file as subject to the "Classpath" exception as provided | ||
| 8 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 9 | * | ||
| 10 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 13 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 14 | * accompanied this code). | ||
| 15 | * | ||
| 16 | * You should have received a copy of the GNU General Public License version | ||
| 17 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 18 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 19 | * | ||
| 20 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 21 | * or visit www.oracle.com if you need additional information or have any | ||
| 22 | * questions. | ||
| 23 | */ | ||
| 24 | |||
| 25 | /* | ||
| 26 | * This file is available under and governed by the GNU General Public | ||
| 27 | * License version 2 only, as published by the Free Software Foundation. | ||
| 28 | * However, the following notice accompanied the original version of this | ||
| 29 | * file: | ||
| 30 | * | ||
| 31 | * Written by Doug Lea with assistance from members of JCP JSR-166 | ||
| 32 | * Expert Group and released to the public domain, as explained at | ||
| 33 | * http://creativecommons.org/publicdomain/zero/1.0/ | ||
| 34 | */ | ||
| 35 | |||
| 36 | package java.util.concurrent; | ||
| 37 | |||
| 38 | /** | ||
| 39 | * A {@link ScheduledFuture} that is {@link Runnable}. Successful | ||
| 40 | * execution of the <tt>run</tt> method causes completion of the | ||
| 41 | * <tt>Future</tt> and allows access to its results. | ||
| 42 | * @see FutureTask | ||
| 43 | * @see Executor | ||
| 44 | * @since 1.6 | ||
| 45 | * @author Doug Lea | ||
| 46 | * @param <V> The result type returned by this Future's <tt>get</tt> method | ||
| 47 | */ | ||
| 48 | public interface RunnableScheduledFuture<V> extends RunnableFuture<V>, ScheduledFuture<V> { | ||
| 49 | |||
| 50 | /** | ||
| 51 | * Returns true if this is a periodic task. A periodic task may | ||
| 52 | * re-run according to some schedule. A non-periodic task can be | ||
| 53 | * run only once. | ||
| 54 | * | ||
| 55 | * @return true if this task is periodic | ||
| 56 | */ | ||
| 57 | boolean isPeriodic(); | ||
| 58 | } | ||