io Java：使用文本文件

1 周，6 日 Questions & Answers 79

我的主屏幕会这样加载：

Press 1 to find Artist List

Press 2 to Book Event

Press 3 to Exit Program

Menu 1: Artist List 2: Book Ticket 3: Exit Please select an option: 1 - 3

选项1显示了我存储在文本文件中的艺术家列表，这很好。但选项2是问题所在，当我选择选项2时，它显示如下：

Menu 1: Artist List 2: Book Ticket 3: Exit Please select an option: 1 - 3

2

Prompt Message: Please be advised that maximum tickets allowed to be purchased is 6.

Input Artist: beyonce

Number of Tickets required: 2

Input Customer Details

我的代码是：

案例2://预订场地

    String chosenArtist = " ";


    int availability = 0;

    int capacity = 0;  //for the calculation of capacity that will be left

    //is the text file that customer details are stored too
        String file_name = "/Users/petercanning/Desktop/customerFile.txt";

    WriteFile data = new WriteFile(file_name, true);

    //the prompt message displays when option 2 is selected
    System.out.println("\n" + "Prompt Message: ");
    System.out.println("Please be advised that maximum tickets allowed to be purchased is 6." + "\n");

    //input the artist name
    System.out.println("\n" + "Input Artist: ");
    chosenArtist = sc.nextLine();
    sc.nextLine();



    //error handling, if ticket is above or below number of tickets allowed
    while(numberTickets < 1 || numberTickets > 6){

    //input the number of tickets required
    System.out.println("\n" + "Number of Tickets required: ");
    numberTickets = sc.nextInt();

    if(numberTickets > 6)
    {
    //this error is displayed if the number of tickets selected is above 6
    System.out.println("Error: You have input the incorrect number of tickets allowed.");

    System.out.println("Number of Tickets required: ");
    numberTickets = sc.nextInt();
    }
    if(numberTickets < 1)
    {
    //this error is displayed if the number of tickets selected is below 1
    System.out.println("Error: You have input the incorrect number of tickets allowed.");

    System.out.println("Number of Tickets required: ");
    numberTickets = sc.nextInt();

    }

    }


    for (Artist A : artistList)

    //this is used to get the ticket price and times it by the number of tickets
    if (A.getArtist().equals(chosenArtist))
    {

    System.out.println("Total Price including fees: ��" + (A.getTicketPrice() * numberTickets + answer));
    }

    System.out.println("\n" + "Input Customer Details");

    //this is the input of customer details that will be saved to the customer file
    System.out.print("\n" + "First Name: ");
    firstName = sc.next();
    System.out.println("\n" + "Surname: ");
    secondName = sc.next();
    System.out.println("\n" + "Address: ");
    sc.nextLine();
    address = sc.nextLine();
    System.out.println("\n" + "Paymet Method: Visa/American Express/Mastercard");
    sc.nextLine();
    System.out.println("\n" + "Card Number: ");
    cardNumber = sc.nextLong();
    sc.nextLine();

    System.out.println("Payment Transaction complete ");

    System.out.println("First Name: " + firstName + "\nSurname: " + secondName + "\nAddress: " + address);

    data.writeToFile(artistList + " " + numberTickets + " " + firstName + " " + secondName + " " + address);


    System.out.println("Payment Successful");

    System.out.println("Customer booking saved!");

    System.out.print("Which artist do you wish to update - Enter Artist");
    chosenArtist = sc.next();

    for(Artist A : artistList)
    {
    if(A.getArtist().equals(chosenArtist)){
    System.out.println("Artist " + chosenArtist + " found");

    availability = (A.getAvailability());

    capacity = 1;
    }
    }

    if(capacity == 0){
    System.out.println("The person does not exist");
    }


    break;

由于某种原因，在我输入车票数量后，程序忽略了将车票数量与车票价格相加的部分，我无法理解为什么会这样做，也无法理解容量的更新是如何不起作用的

我的艺术家文本文件也如下所示：

beyonce hydro 44.40 1200

dan glasgow 23 120

BonJovi SECC 82 5000

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