ThreadPool线程池

 1 /**
 2  * new SingleThreadExecutor 核心线程一个、最大线程一个、创建后不销毁、无限队列
 3  */
 4 private static void singleThreadPool() {
 5     ExecutorService executor = Executors.newSingleThreadExecutor();
 6     for (int i = 0; i < 10; i++) {
 7         executor.execute(new MyRunable(i));
 8     }
 9     // 执行完后销毁线程池
10     executor.shutdown();
11 }

 1 /**
 2  * new FixedThreadPool        核心线程和最大线程一样，创建后不销毁、无限队列
 3  */
 4 private static void fixedThreadPool() {
 5     int threadSize = 5;
 6     ExecutorService executor = Executors.newFixedThreadPool(threadSize);
 7     for (int i = 0; i < 15; i++) {
 8         executor.execute(new MyRunable(i));
 9     }
10     // 执行完后销毁线程池
11     executor.shutdown();
12 }

 1 /**
 2  * new CachedThreadPool        核心线程零个、最大线程无限、创建后60s无复用销毁、同步队列
 3  */
 4 private static void cachedThreadPool() {
 5     ExecutorService executor = Executors.newCachedThreadPool();
 6     for (int i = 0; i < 100; i++) {
 7         executor.execute(new MyRunable(i));
 8     }
 9     // 执行完后销毁线程池
10     executor.shutdown();
11 }