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 * 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
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 * accompanied this code).
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/*
 * 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;

A ScheduledFuture that is Runnable. Successful execution of the run method causes completion of the Future and allows access to its results. 
Author:
Doug Lea
Type parameters:
<V> – The result type returned by this Future's get method
See Also:
FutureTask
Executor
Since:
1.6/**
 * A {@link ScheduledFuture} that is {@link Runnable}. Successful
 * execution of the {@code run} method causes completion of the
 * {@code Future} and allows access to its results.
 * @see FutureTask
 * @see Executor
 * @since 1.6
 * @author Doug Lea
 * @param <V> The result type returned by this Future's {@code get} method
 */
public interface RunnableScheduledFuture<V> extends RunnableFuture<V>, ScheduledFuture<V> {

    
Returns true if this task is periodic. A periodic task may re-run according to some schedule. A non-periodic task can be run only once. 
Returns:
true if this task is periodic/**
     * Returns {@code true} if this task is periodic. A periodic task may
     * re-run according to some schedule. A non-periodic task can be
     * run only once.
     *
     * @return {@code true} if this task is periodic
     */
    boolean isPeriodic();
}