printfのスレッド同期への影響(未完了)

public class Test implements Runnable {
	//       
	long times = 0;
	int id = 0;
	boolean flag = true;

	Test() {
		new Thread(this).start();
	}

	public void offAndCount() {
		if (flag)
			id++;
		flag = false;
	}

	public void on() {
		times++;
		System.out.print(""); //         ，         。                   ，    print        （  ：print         ） 
		flag = true;
	}

	public String runtime() {
		return "On() execute times==" + times+"   ID=="+id;
	}

	//        
	public void createANewThread() {
		new Thread(new Runnable() {
			public void run() {
				while (true)
					try {
						Thread.sleep(1);
						//  1ms    
						on();
					} catch (Exception e) {}
			}
		}).start();
	}

	@Override
	public void run() {
		createANewThread();
		//       
		while (true)
			offAndCount();
	}

	public static void main(String[] args) {
		Test t = new Test();
		try {
			Thread.sleep(3000);
		} catch (Exception e) {}
		System.out.println(t.runtime());
		System.exit(0);
	}

}