线程join()坑爹

public class TestJoin
{
    public static void main(String[] args)throws 
    InterruptedException 
    {
        Thread t1 = new Thread()
        {
            @Override
            public void run()
            {
                try{
                    sleep(5000);
                    System.out.println("thread1,");
                } catch (Exception e)
                {e.printStackTrace();}
            }
        };
        Thread t2 = new Thread()
        {
            @Override
            public void run()
            {
                System.out.println("thread2,");
            }
        };
        t1.start();
        t2.start();
        System.out.println("game over");
    }
}

//输出结果，线程一延迟了5秒，基本上就是后执行
game over
thread2,
thread1,

t1.start();
t1.join();//join加入
t2.start();
System.out.println("game over");

//输出结果
thread1,
game over
thread2,