【多线程实现方案一：继承Thread 类】

自定义类MyThread继承Thread类：

package com.shusheng.tihuzhai.test;

/**
 * @author shusheng
 * @description
 * @Email shusheng@yiji.com
 * @date 2018/8/27 14:54
 */
public class MyThread extends Thread {

    public MyThread(){}

    public MyThread(String name){
        super(name);
    }

    @Override
    public void run(){

        for(int x=0;x<2000;x++){
            System.out.println(getName()+":"+x);
        }

    }

}

创建对象，给线程命名，启动线程：

package com.shusheng.tihuzhai.test;

/**
 * @author shusheng
 * @description
 * @Email shusheng@yiji.com
 * @date 2018/8/27 14:59
 */
public class TestMyThread {

    public static void main(String[] args){

        MyThread my1  = new MyThread("张三");
        MyThread my2  = new MyThread("李四");

        System.out.println(Thread.currentThread().getName());

        my1.start();
        my2.start();
    }

}