简单多线程卖票代码

public class Thread2 {
  public static void main(String[] args) {
    ShareData d = new ShareData();
//两个窗口卖票
    new Thread(d).start();
    new Thread(d).start();
  }
}


class ShareData implements Runnable {
  
  private int count = 100;
  
  @Override
  public void run() {
    synchronized (ShareData.class) {
      while (count > 0) {
        try {
          Thread.sleep(1000);
        } catch (InterruptedException e) {
          e.printStackTrace();
        }
        count--;
        System.out.println(Thread.currentThread().getName() + "余票: " + count);
      } 
    }
  }
  
  
  
}