进行预订 - For 循环

Question

我不确定我是否正确地执行了 for 循环以在 if 语句中给出一个真实的值。 如果我需要使用这种 for 循环，我如何增加 1。这是我正在研究的部分。

要进行预订，应提示用户输入他们希望旅行的目的地和星期几。如果存在这样的航班并且航班上有可用座位，则应输入乘客详细信息并创建新乘客。为该航班预订的座位数应加 1。

    public void flightBooking(){

    Passenger passenger;
    String    flightDay, flightDestination;
    boolean   found = false;
    Flight    myFlight = null;
    Scanner   scan = new Scanner(System.in);


    System.out.println(" On which day do you wish to travel ? ");
    flightDay = scan.nextLine();

    System.out.println(" What is your destination ? ");
    flightDestination = scan.nextLine();


    for ( Flight d  : flightList ) 
    {
        if (d.getDay().equals(flightDay))
        {
            myFlight= d;
            found = true;
        }

    }

    for ( Flight s  : flightList )
    {
        if (s.getDestination().equals(flightDestination))
        {
            myFlight= s;
            found = true;
        }

    }


    if (found == true)
    {
        System.out.println("The Flight Day and Destination were found, the Flight will be booked.");
        Passenger passengers = new Passenger ("Laura", "14 Rathmines Rd ","laura99@gmail.com" , myFlight);
        passengerList.add(passengers);

    }
    else
    {
        System.out.println("There is no flight booking.");
    }
}

Answer 1

这是优化后的代码

public void flightBooking(){

 Passenger passenger;
 String    flightDay, flightDestination;
 boolean   found = false;
 Flight    myFlight = null;
 Scanner   scan = new Scanner(System.in);


 System.out.println(" On which day do you wish to travel ? ");
 flightDay = scan.nextLine();

 System.out.println(" What is your destination ? ");
 flightDestination = scan.nextLine();


 for ( Flight d  : flightList ) 
 {
    if (d.getDay().equals(flightDay) && d.getDestination().equals(flightDestination))
    {
        System.out.println("The Flight Day and Destination were found, the Flight will be booked.");
    Passenger passengers = new Passenger ("Laura", "14 Rathmines Rd ","laura99@gmail.com" , myFlight);
    passengerList.add(passengers);
        found = true;
        break;
    }

 }

 if (found == false)
 {

    System.out.println("There is no flight booking.");
 }
}

在您的代码中，如果日期不匹配且目的地匹配，那么预订也会发生，因为添加两个 for 循环正在生成它或条件，但它应该是 and。也只能通过一个for循环来实现。