如何正确格式化我的代码以在Java中运行此菜单程序？

Question

Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers.

---

这个问题是由类错字或无法再现的问题引起的。虽然类似的问题可能是主题在这里，这一问题的解决方案的解决方案较小，无法帮助未来的读者。

闭合 2年前。

Answer 1

您的代码有一些问题。我注意到的第一个是您没有声明在默认情况下尝试为值分配值的“选择”变量。

您面临的错误是由于未关闭主要方法，您在关闭WARE循环后只是错过了“}”。

在这里，它是正确关闭的：

    public static void main(String[] args) {
    Scanner kb = new Scanner(System.in);
    double num1, num2;
    boolean keepGoing = true;
    int choice;
    double answer = 0.0;
    double calcTax;

    System.out.print("Please give me a number: ");
    num1 = kb.nextDouble();
    System.out.print("Please give me another number: ");
    num2 = kb.nextDouble();

    while (keepGoing) {
        System.out.print("Which would you like to do? ");
        choice = kb.nextInt();
        double average = findAverage(num1, num2);

        switch (choice) {
            case 1:
                System.out.println(+num1 + " + " + num2 + " = ");
                break;
            case 2:
                System.out.println("The average of " + num1 + "and" + num2 + "is" + average);
                break;
            case 3:
                System.out.println("The amount in tax to be collected from a purchace of " + num1 + "and " + num2 + "is " + calcTax);
                break;
            case 4:
                System.out.println("You've chosen to quit.");
                System.exit(0);
                return;
            default:
                System.out.println("Invalid entry. Please try again.");
                selection = scanner.nextInt();
        }
        kb.close();
    }
}

您的程序仍然存在一些问题，即逻辑，您应该分析自己以发展自己的编程能力。