JDK源码——Callable类

摘要

实例代码

package com.zhuangxiaoyan.jdk.juc.JucLock;

import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.FutureTask;

/**
 * @Classname CallableDemo
 * @Description TODO
 * @Date 2021/11/27 15:57
 * @Created by xjl
 */

class MyThread implements Runnable {

    @Override
    public void run() {

    }
}

class MyThread2 implements Callable {

    @Override
    public Integer call() throws Exception {
        System.out.println("********************** come in Callable");
        return 1024;
    }
}

public class CallableDemo {

    public static void main(String[] args) throws ExecutionException, InterruptedException {
        FutureTask futureTask = new FutureTask(new MyThread2());

        Thread t1 = new Thread(futureTask, "AAA");
        t1.start();
        Integer res = futureTask.get();
        System.out.println(res);

    }
}