| Package | Description | 
|---|---|
| java.util.concurrent | Utility classes commonly useful in concurrent programming. | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | RunnableScheduledFuture<V>A  ScheduledFuturethat isRunnable. | 
| Modifier and Type | Method and Description | 
|---|---|
| <V> ScheduledFuture<V> | ScheduledThreadPoolExecutor. schedule(Callable<V> callable,
        long delay,
        TimeUnit unit) | 
| <V> ScheduledFuture<V> | ScheduledExecutorService. schedule(Callable<V> callable,
        long delay,
        TimeUnit unit)Creates and executes a ScheduledFuture that becomes enabled after the
 given delay. | 
| ScheduledFuture<?> | ScheduledThreadPoolExecutor. schedule(Runnable command,
        long delay,
        TimeUnit unit) | 
| ScheduledFuture<?> | ScheduledExecutorService. schedule(Runnable command,
        long delay,
        TimeUnit unit)Creates and executes a one-shot action that becomes enabled
 after the given delay. | 
| ScheduledFuture<?> | ScheduledThreadPoolExecutor. scheduleAtFixedRate(Runnable command,
                   long initialDelay,
                   long period,
                   TimeUnit unit) | 
| ScheduledFuture<?> | ScheduledExecutorService. scheduleAtFixedRate(Runnable command,
                   long initialDelay,
                   long period,
                   TimeUnit unit)Creates and executes a periodic action that becomes enabled first
 after the given initial delay, and subsequently with the given
 period; that is executions will commence after
  initialDelaytheninitialDelay+period, theninitialDelay + 2 * period, and so on. | 
| ScheduledFuture<?> | ScheduledThreadPoolExecutor. scheduleWithFixedDelay(Runnable command,
                      long initialDelay,
                      long delay,
                      TimeUnit unit) | 
| ScheduledFuture<?> | ScheduledExecutorService. scheduleWithFixedDelay(Runnable command,
                      long initialDelay,
                      long delay,
                      TimeUnit unit)Creates and executes a periodic action that becomes enabled first
 after the given initial delay, and subsequently with the
 given delay between the termination of one execution and the
 commencement of the next. | 
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