多线程03：继承Thread类

package thread.p3_How_to_extend_class_Thread;

public class Extend extends Thread {
    @Override
    public void run() {
        //run方法线程体
        for (int i = 0; i < 100; i++) {
            System.out.println("side Thread::::" + i);
        }
    }

    public static void main(String[] args) {
        //main主线程

        //创建一个线程对象
        Extend extend = new Extend();

        //调用start（）方法开启线程
        extend.start();

        for (int i = 0; i < 1000; i++) {
            System.out.println("Main Thread!" + i);
        }
    }
}