java多线程---------java.util.concurrent并发包----------ThreadPoolExecutor

ThreadPoolExecutor线程池

一、三个构造方法

　　ThreadPoolExecutor(int corePoolSize,int MaxmumPoolSize,long KeepAliveTime,,TimeUnit  unit,BolokingQueue<Runnable> workQueue)

 　　ThreadPoolExecutor(int corePoolSize,int MaxmumPoolSize,long KeepAliveTime,,TimeUnit  unit,BolokingQueue<Runnable> workQueue,RejectExceptionHandler handler)

　　ThreadPoolExecutor(int corePoolSize,int MaxmumPoolSize,long KeepAliveTime,,TimeUnit  unit,BolokingQueue<Runnable> workQueue,ThreadFactory threadFactory)

　　ThreadPoolExecutor(int corePoolSize,int MaxmumPoolSize,long KeepAliveTime,,TimeUnit  unit,BolokingQueue<Runnable> workQueue,ThreadFactory threadFactory,RejecExceptiontHandler handler,)

　　标注

　　1、CorePoolSize  线程池的基本大小

　　2、MaxmunPoolSize  线程池最大数量

　　3、KeepAliveTime  线程活动保持时间

　　4、BlokingQueue 任务队列  （ArrayBlokingQueue   LinkedBlokingQueue  synchronousQueue  PriorityBlokingQueue）

　　5、RejectExceptionHandler  饱和策略    （AbortPlicy  CallerRunsPolicy DiscardOldestPolicy  DiscardPolicy）

　　6、ThreadFactory