No.9 java5线程并发库的应用（线程池）

1.线程池的创建

  a.创建固定大小的线程池//ExecutorService  pool = Executors.newFixedThreadPool(3);

  b.创建缓存线程池 //ExecutorService  pool = Executors.newCachedThreadPool();

  c.创建单一线程池//ExecutorService  pool = Executors.newSingleThreadExecutor();

  d.创建定时线程池//Executors.newScheduledThreadPool(1) 但是有点小瑕疵，详见开发文档