Java线程池

Executor创建方式：

创建方式	corePoolSize	maximumPoolSize	keepAliveTime	workQueue
newCachedThreadPool()	0	Integer.MAX_VALUE	60s	SynchronousQueue
newSingleThreadExecutor()	1	1	0	LinkedBlockingQueue
newFixedThreadPool()	n	n	0	LinkedBlockingQueue
newScheduledThreadPool()	n	Integer.MAX_VALUE	0	DelayedWorkQueue

RejectedExecutionHandler实现类：

• ThreadPoolExecutor.AbortPolicy：抛出RejectedExecutionException
• ThreadPoolExecutor.CallerRunsPolicy：在调用方线程执行任务
• ThreadPoolExecutor.DiscardOldestPolicy：丢弃最早的请求然后重试
• ThreadPoolExecutor.DiscardPolicy：丢弃该请求

参考

从创建线程池的源码来深入分析究竟有哪些方式可以创建线程池 (opens new window)