package tk.javazhangwei.thread.syn;

/***
 * 執行緒安全問題
 * 
 * @author zw
 *
 */
public class SynDemo01 {
	public static void main(String[] args) {
		Web12306 web = new Web12306();
		Thread th = new Thread(web, "黃牛");
		Thread th1 = new Thread(web, "農民工");
		Thread th2 = new Thread(web, "學生");
		Thread th3 = new Thread(web, "商人");

		th.start();
		th1.start();
		th2.start();
		th3.start();
	}
}

class Web12306 implements Runnable {
	private int num = 10;
	private boolean f = true;

	@Override
	public void run() {
		while (f) {
			test1();
		}
	}
	//同步塊
	public void test1() {
		synchronized (this) {
			if (num <= 0) {
				f = false;
				return;
			}
			try {
				Thread.sleep(1000);
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			System.out.println(Thread.currentThread().getName() + "，恭喜您，搶到票了，編號為：" + num--);
		}
	}
	//同步方法
	public synchronized void test() {
		if (num <= 0) {
			f = false;
			return;
		}
		try {
			Thread.sleep(1000);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		System.out.println(Thread.currentThread().getName() + "，恭喜您，搶到票了，編號為：" + num--);
	}
}