多线程卖火车票简单例子

import java.util.concurrent.Callable;
import java.util.concurrent.Future;
import java.util.concurrent.FutureTask;

public class JavaTest {

  public static void main(String[] args) {
    SaleTicket st = new SaleTicket();
    Thread t1 = new Thread(st, "一号窗口");
    Thread t2 = new Thread(st, "二号窗口");
    Thread t3 = new Thread(st, "三号窗口");
    Thread t4 = new Thread(st, "四号窗口");
    t1.start();
    t2.start();
    t3.start();
    t4.start();
  }
}

class SaleTicket extends Thread {// sale英 [seɪl] n.拍卖;卖，出卖;
  private int tickets = 100;

  @Override
  public void run() {
    while (tickets > 0) {
      sale();
    }
  }

  private synchronized void sale() {// synchronized 同步。
    if (tickets > 0) {
      System.out.println(Thread.currentThread().getName() + "卖出了第"
          + (100 - tickets + 1) + "张票");
      tickets--;

      try {
        Thread.sleep(500);
      } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      }// 假设购票过程需要500毫秒。

    }
  }
}