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代碼如下:
public class Ticket1 implements Runnable {private int tickets = 100;@Overridepublic void run() {while (tickets > 0) {synchronized (Ticket.class) {if (tickets > 0) {tickets--;System.out.println(Thread.currentThread().getName() + "正在賣票，還剩下" + tickets + "張");}}try {// 休眠一秒，讓執行的效果更明顯Thread.sleep(100);} catch (InterruptedException e) {e.printStackTrace();}}}public static void main(String[] args) {Ticket1 ticket = new Ticket1();Thread t1 = new Thread(ticket, "窗口一：");Thread t2 = new Thread(ticket, "窗口二：");Thread t3 = new Thread(ticket, "窗口三：");t1.start();t2.start();t3.start();}
}

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