这样写有没有开启多个线程？为什么打印出来的都只是一个线程啊

Question

/*
* 实体类 Thread
* */
public class Ticket extends Thread{
    private Integer num=100;
    private Object obj=new Object();
    boolean flan=true;

    //重写Thread类的run方法供线程调用
    public void run(){
        while (flan){
//            synchronized(obj){
                    try {
                        Thread.sleep(20);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    if (num>0){
                        System.out.println(getName()+"..........."+num--);
                    }else {
                        flan=false;
                    }
//            }
        }
    }

    public Ticket(Integer num) {
        this.num = num;
    }

    public Ticket() {
    }

    public Integer getNum() {
        return num;
    }

    public void setNum(Integer num) {
        this.num = num;
    }
}

/*
* 创建多线程
* */
public class Establish {
    public static void main(String args[]){

        //方式一：继承Thread类
        Ticket ticket=new Ticket();
        Thread thread=new Thread(ticket);
        Thread thread2=new Thread(ticket);
        Thread thread3=new Thread(ticket);

        thread.start();
        thread2.start();
        thread3.start();

    }
}

这是打印的线程的名字，为什么都是一样的呢？

Thread-0...........100
Thread-0...........99
Thread-0...........98
Thread-0...........97
Thread-0...........96
Thread-0...........95
Thread-0...........94
Thread-0...........93
Thread-0...........92

Answer 1

你直接new三个Ticket不就是三个线程了么，或者你吧Ticket变成runable实现类也可以是三个线程啊。