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/*

 * 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();

}