| Package | Description | 
|---|---|
| java.util.concurrent | Utility classes commonly useful in concurrent programming. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | ForkJoinPoolAn  ExecutorServicefor runningForkJoinTasks. | 
| class  | ScheduledThreadPoolExecutorA  ThreadPoolExecutorthat can additionally schedule
 commands to run after a given delay, or to execute
 periodically. | 
| class  | ThreadPoolExecutorAn  ExecutorServicethat executes each submitted task using
 one of possibly several pooled threads, normally configured
 usingExecutorsfactory methods. | 
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