多线程 -- join

/*
join:
当A线程执行到了B线程的.join()方法时，A就会等待。等B线程都执行完，A才会执行。

join可以用来临时加入线程执行。


*/

class Demo implements Runnable
{
    public void run()
    {
        for(int x=0; x<70; x++)
        {
            System.out.println(Thread.currentThread().toString()+"....."+x);
            Thread.yield();
        }
    }
}


class  JoinDemo
{
    public static void main(String[] args) throws Exception
    {
        Demo d = new Demo();
        Thread t1 = new Thread(d);
        Thread t2 = new Thread(d);
        t1.start();

        //t1.setPriority(Thread.MAX_PRIORITY);

        t2.start();

        //t1.join();

        for(int x=0; x<80; x++)
        {
            //System.out.println("main....."+x);
        }
        System.out.println("over");
    }
}