package com.twod4z;/** * @program: com.twod4z * @description: * @author: Mr.Lin * @create: 2019年8月7日 **/public class MyThread extends Thread{        public void run() {                       for(int i=0;i<=20;i++) {                                         Thread t=Thread.currentThread();                                                        System.out.println((i+1)+".你好，来自线程"+t.getName());                          }                  }}

package com.twod4z;/** * @program: com.twod4z * @description: * @author: Mr.Lin * @create: 2019年8月7日 **/public class Test {    public static void main(String[] args) {        MyThread myThread1 = new MyThread();                       MyThread myThread2 = new MyThread();                                        myThread1.start();                         myThread2.start();    }}