用Runnable接口程序来模拟航班售票系统

好的，我来给您展示一个简单的模拟航班售票系统的程序，使用Java中的Runnable接口实现多线程。

首先，我们需要定义一个Flight类来表示航班，包括航班号、起点城市、终点城市、出发时间、座位数等信息：

public class Flight {
    private String flightNo;
    private String from;
    private String to;
    private Date departureTime;
    private int seatNum;

    // 构造函数
    public Flight(String flightNo, String from, String to, Date departureTime, int seatNum) {
        this.flightNo = flightNo;
        this.from = from;
        this.to = to;
        this.departureTime = departureTime;
        this.seatNum = seatNum;
    }

    // getter 和 setter 方法
    // ...
}

然后，我们定义一个Ticket类来表示机票，包括航班号、座位号等信息：

public class Ticket {
    private String flightNo;
    private int seatNo;

    // 构造函数
    public Ticket(String flightNo, int seatNo) {
        this.flightNo = flightNo;
        this.seatNo = seatNo;
    }

    // getter 和 setter 方法
    // ...
}

接下来，我们定义一个FlightTicketSystem类来模拟航班售票系统，包括航班列表、机票列表等信息，并实现Runnable接口来模拟售票线程：

public class FlightTicketSystem implements Runnable {
    private List<Flight> flights;
    private List<Ticket> tickets;

    // 构造函数
    public FlightTicketSystem(List<Flight> flights) {
        this.flights = flights;
        this.tickets = new ArrayList<>();
    }

    // 售票方法
    public synchronized boolean sellTicket(String flightNo) {
        Flight flight = null;
        for (Flight f : flights) {
            if (f.getFlightNo().equals(flightNo)) {
                flight = f;
                break;
            }
        }
        if (flight == null || flight.getSeatNum() <= 0) {
            return false;
        }
        Ticket ticket = new Ticket(flightNo, flight.getSeatNum());
        flight.setSeatNum(flight.getSeatNum() - 1);
        tickets.add(ticket);
        System.out.println(Thread.currentThread().getName() + " sells ticket: " + ticket);
        return true;
    }

    // run方法，模拟售票过程
    @Override
    public void run() {
        while (true) {
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            int index = (int) (Math.random() * flights.size());
            String flightNo = flights.get(index).getFlightNo();
            if (!sellTicket(flightNo)) {
                System.out.println(Thread.currentThread().getName() + " fails to sell ticket for flight " + flightNo);
            }
        }
    }
}

最后，我们在主函数中创建多个线程来模拟售票过程：

public class Main {
    public static void main(String[] args) {
        List<Flight> flights = new ArrayList<>();
        flights.add(new Flight("CA001", "Beijing", "Shanghai", new Date(), 10));
        flights.add(new Flight("CA002", "Shanghai", "Beijing", new Date(), 10));
        flights.add(new Flight("CA003", "Beijing", "Guangzhou", new Date(), 10));
        flights.add(new Flight("CA004", "Guangzhou", "Beijing", new Date(), 10));
        flights.add(new Flight("CA005", "Shanghai", "Guangzhou", new Date(), 10));
        flights.add(new Flight("CA006", "Guangzhou", "Shanghai", new Date(), 10));

        FlightTicketSystem system = new FlightTicketSystem(flights);

        Thread t1 = new Thread(system, "Seller A");
        Thread t2 = new Thread(system, "Seller B");
        Thread t3 = new Thread(system, "Seller C");

        t1.start();
        t2.start();
        t3.start();
    }
}

以上就是一个简单的航班售票系统的模拟程序，使用了Java中的Runnable接口来实现多线程。当线程在售票时，会随机选择一个航班并尝试售出一张机票，如果售票成功，会将机票信息打印出来；如果售票失败，会输出相应的提示信息。