学习练习 java 线程

package com.hanqi.xc;

import java.util.*;

public class lianxi extends Thread
{
         
    public void run()
    {
        chengshi();
    }
    
    public void chengshi()
    {
        for(int i=1;i<=10;i++)
        {
        Random n=new Random();
        int a= n.nextInt(2);
        if(a==0)
        {
            System.out.println(Thread.currentThread().getName()+"济南");
        }
        
        else
        {
            System.out.println(Thread.currentThread().getName()+"青岛");
        }
        
        try
        {
            Thread.sleep(1000);
        }
        catch (InterruptedException e)
        {
            e.printStackTrace();
        }        
        }
    }
}

package com.hanqi.xc;

public class lianxi2 {

    
     public static void main(String[] args) 
        {
            lianxi a1=new lianxi();
            a1.setName("线程1");
            a1.start();
            lianxi a2=new lianxi();
            a2.setName("线程2");
            a2.start();
        }
     
     
}