回顾线程创建的三种方法

import java.util.concurrent.*;

//回顾总结线程的创建
public class testNew {
    public static void main(String[] args) throws ExecutionException, InterruptedException {
        //方式1
        Mythread1 mythread1 = new Mythread1();
        mythread1.start();
        //方式2
        Mythread2 mythread2 = new Mythread2();
        new Thread(mythread2).start();
        //方式3
        
        Mythread3 mythread3 = new Mythread3();
        ExecutorService ser = Executors.newFixedThreadPool(1);
        Future result1 = ser.submit(mythread3);
        Integer r1 = result1.get();
        ser.shutdown();

    }
}

//1.继承Thread类
class Mythread1 extends Thread{
    @Override
    public void run() {
        System.out.println("Mythread1");
    }
}
//2.实现Runnable接口
class Mythread2 implements Runnable{
    @Override
    public void run() {
        System.out.println("Mythread2");
    }
}
//3.实现Callable接口
class Mythread3 implements Callable{
    @Override
    public Integer call() throws Exception {
        System.out.println("Mythread3");
        return 100;
    }
}