线程问题<3>

有N张火车票，每张票都有一个编号，同时有10个窗口对外售票，请写一个模拟程序

1.使用锁

缺点: 效率不高

public class Test7 {
  
  private LinkedList list = new LinkedList();
  
  public static void main(String[] args) {
    final Test7 t = new Test7();
    for (int i = 0; i < 3000; i++) {
      t.list.add(i);
    }
    for (int i = 0; i < 10; i++) {
      new Thread() {
        public void run() {
          synchronized (t.list) {
            while(t.list.size()>0) {
              System.out.println("销售了" + t.list.removeFirst());
            }
          }
        }
      }.start();
    }
  }

}

2.使用并发容器: ConcurrentLinkedQueue

public class Test8 {
  
  static Queue<String> tickets = new ConcurrentLinkedQueue<String>();
  
  static {
    for (int i = 0; i < 5000; i++) {
      tickets.add("票编号" + i);
    }
  }
  
  public static void main(String[] args) {
    for (int i = 0; i < 10; i++) {
      new Thread() {
        public void run() {
          while(true) {
            String s = tickets.poll();
            if(s == null) break;
            else System.out.println("销售了" + s);
          }
        }
      }.start();
    }
  }

}