/*

 * 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.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.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/licenses/publicdomain

 */

package java.util.concurrent;

/**

 * A {@link ScheduledFuture} that is {@link Runnable}. Successful

 * execution of the <tt>run</tt> method causes completion of the

 * <tt>Future</tt> 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 <tt>get</tt> method

 */

public interface RunnableScheduledFuture<V> extends RunnableFuture<V>, ScheduledFuture<V> {

    /**

     * Returns true if this is a periodic task. A periodic task may

     * re-run according to some schedule. A non-periodic task can be

     * run only once.

     *

     * @return true if this task is periodic

     */

    boolean isPeriodic();

}