Callable

Callable

1、可以有返回值
2、可以抛出异常
3、方法不同，run()/ call()

package com.cz.callbale;

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

/**
 * @author 卓亦苇
 * @version 1.0
 * 2023/3/5 9:46
 */
public class callableTest {
    public static void main(String[] args) {
        //new Thread(new FutureTask<>(new MyThread())).start();
        FutureTask task = new FutureTask<>(new MyThread());
        new Thread(task).start();
        try {
            System.out.println((int) task.get());
        } catch (Exception e) {


        }
    }
}
class MyThread implements Callable<Integer>{

    @Override
    public Integer call(){
        System.out.println("call");

        return 1234;
    }
}