三种创建线程的方式

package com.guo.gaoji;

import com.sun.org.apache.xpath.internal.operations.Neg;

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

public class ThreadNew {
    public static void main(String[] args) {

        new MyThread1().start();

        new Thread(new MyThread2()).start();

        FutureTask<Integer> futureTask = new FutureTask<Integer>(new MyThread3());
        new Thread(futureTask).start();

        try {
            Integer integer = futureTask.get();
            System.out.println(integer);
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        } catch (ExecutionException e) {
            throw new RuntimeException(e);
        }

    }
}

//1.继承Thread
class MyThread1 extends Thread{
    @Override
    public void run() {
        System.out.println("MyThread1");
    }
}

//2.Runnable接口
class MyThread2 implements Runnable{
    @Override
    public void run() {
        System.out.println("MyThread2");
    }
}

//3.Callable接口
class MyThread3 implements Callable<Integer>{
    @Override
    public Integer call() throws Exception {
        System.out.println("MyThread3");
        return 520;
    }
}