继承Thread类的方式创建线程

//继承Thread类
public class MyThread extends Thread {
    //重写run方法
    public void run() {
        for(int i = 0;i<20;i++) {
            System.out.println("你好，来自线程"+Thread.currentThread().getName());
        }
    }
}

//测试类
public class Test {
    public static void main(String[] args) {
        MyThread mythread = new MyThread();
        MyThread mythread1 = new MyThread();
        mythread.start();//启动线程
        mythread1.start();
    }
}

运行结果：