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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;

import java.util.*;

/**

 * A mix-in style interface for marking objects that should be

 * acted upon after a given delay.

 *

 * <p>An implementation of this interface must define a

 * <tt>compareTo</tt> method that provides an ordering consistent with

 * its <tt>getDelay</tt> method.

 *

 * @since 1.5

 * @author Doug Lea

 */

public interface Delayed extends Comparable<Delayed> {

    /**

     * Returns the remaining delay associated with this object, in the

     * given time unit.

     *

     * @param unit the time unit

     * @return the remaining delay; zero or negative values indicate

     * that the delay has already elapsed

     */

    long getDelay(TimeUnit unit);

}