Callable/Future Runnable 以及 FutureTask 用法

Callable/Future  Runnable 以及 FutureTask 用法，代码示例：

import java.util.concurrent.*;

public class Test {
    private static ExecutorService executorService = Executors.newCachedThreadPool();

    public static void main(String[] args) throws Exception {
        testFuture();
        System.out.println("===================");
        testFutureTask();
    }

    public static void testFuture() throws ExecutionException, InterruptedException {
        /**
         * submit 可以返回一个匿名的 Future 实现，通过该实现可以进行 取消/获取等待 等操作
         * get() 会阻塞知道结果拿到
         */
        Future future = executorService.submit(new MyCallable(1));
        System.out.println(future.isDone());
        System.out.println(future.get());
        System.out.println(future.isDone());
    }

    public static void testFutureTask() throws ExecutionException, InterruptedException {
//        FutureTask