JAVA 线程Join

join方法: 当某个线程要等待另一个线程执行结束后才能继续执行时，使用join方法。

public class DinnerThread {
     
    public static void main(String[] args){
        DinnerThread thread = new DinnerThread();
        Dinner fatherThread = thread.new Dinner();
        Thread myThread = new Thread(fatherThread);
        myThread.start();
         
    }
 
    public class Dinner implements Runnable
    {
 
        public void run() {
            System.out.println("去饭店吃饭");
            System.out.println("点完菜让饭店做菜：");
            Thread restaurantThread = new Thread(new RestaurantThread());
            restaurantThread.start();
            try {
                restaurantThread.join();
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            System.out.println("开始吃饭"); 
        }
         
    }
     
    public class RestaurantThread implements Runnable{
 
        public void run() {
            System.out.println("饭店开始做菜");
            for(int i=0;i<10;i++){
                System.out.println("饭店做菜("+(i+1)+")...");
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
            System.out.println("饭店上菜");
             
        }
         
    }
}