| 线程池类型 | corePoolSize | 队列 |
|---|---|---|
| newCachedThreadPool | 0 | SynchronousQueue |
| newSingleThreadExecutor | 1 | LinkedBlockingQueue |
| newFixedThreadPool | nThreads | LinkedBlockingQueue |
| newScheduledThreadPool | 1 | DelayedWorkQueue |
| newSingleThreadScheduledExecutor | 1 | DelayedWorkQueue |
| 拒绝策略 |
|---|
| 默认 AbortPolicy 拒绝 |
| DiscardPolicy 忽略 |
| CallerRuns 线程自己执行 |
| DiscardOldest 丢弃最老的 |
