150_多线程(Join方法)

/*
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().getName()
			+"...."+x);
		}
	}
}
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.join();
		t2.start();
		
		for(int x=0;x<80;x++){
			System.out.println("main.."+x);
		}
		System.out.println("over");
	}
}

class Demo implements Runnable{
	public void run(){
		for(int x = 0;x < 70;x++){
			System.out.println(Thread.currentThread().getName()
			+"...."+x);
		}
	}
}
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();
		
		t2.start();
		t1.join();
		
		for(int x=0;x<80;x++){
			System.out.println("main.."+x);
		}
		System.out.println("over");
	}
}