线程池

常用创建线程池：

Executors.newSingleThreadExecutor();
Executors.newCachedThreadPool();
Executors.newFixedThreadPool();
Executors.newScheduledThreadPool();

实践（使用上述内部实现）：

/**
 * 创建一个线程池用于处理
 */
private static final ThreadPoolExecutor SINGLE_THREADPOOLEXECUTOR = new ThreadPoolExecutor(1, 1, 0L, TimeUnit.MILLISECONDS,
            new ArrayBlockingQueue<Runnable>(100),
            new ThreadFactory() {
                @Override
                public Thread newThread(Runnable r) {
                    Thread thread = new Thread(r);
                    thread.setDaemon(true);
                    return thread;
                }
            },new ThreadPoolExecutor.DiscardPolicy());

使用：

SINGLE_THREADPOOLEXECUTOR.execute(new Runnable() {
            @Override
            public void run() {
                initExtendedAreaSurcharge();
            }
        });