pingpongdaemon.java

nanjing university cs 的java课件。 对新手很有用。付课件中源码。

class PingPongDaemon extends Thread {
	String word; 
	int delay; 
	PingPongDaemon(String whatToSay,int delayTime) { 
		word=whatToSay; delay=delayTime;  
	}
	public void run() { 
		try {    
			for(;;) {
				System.out.print(word + " "); 
				sleep(delay); 
			} 
		}catch(InterruptedException e) { 
			return; 
		}
	}
	public static void main(String[] args) { 
		Thread t1 = new PingPongDaemon("ping",33);
		//t1.setDaemon(true);
		t1.start();        //  1/30s 
		Thread t2 = new PingPongDaemon("PONG",100); 
		//t2.setDaemon(true);
		t2.start();
	}  //  1/10s
}