我的循环一直在循环，它也在循环错误的东西？

Question

boolean test = true;// 我的循环从这里开始，我希望能够在未选择任何案例时循环 //switch 语句，我希望循环在显示错误后返回到案例 1消息。

while (test)

Proceed = Next.nextInt();
switch (Proceed) {

    case 1:// Proceed 
        System.out.println("Please enter your 5 digit pin below.");
        Scanner Pin = new Scanner(System.in);
        int Pincode = Pin.nextInt();
        if (Pincode > 9999 && Pincode < 99999) {
            System.out.println("1)Display Balance");
            System.out.println("2)Withdraw Cash");
            System.out.println("3)Other services");

        } else {
         System.err
                    .println("Sorry,the pin you enterd was incorrect\nyour card is being ejected\nPlease wait...");
        }
        test=false;
        break;

    case 2:// Return Card
        System.err.println("Your card is being ejected.\n Please Wait..");
        test=false;
        break;

    default:  // i want to display this message and send it back to case 1. when i do the method i'm doing it just keeps spamming this message.
        System.err.println("Sorry your request could not be processed.Please re-try");
        test=true;
}

Answer 1

如果您想将其发送回案例 1，那么您需要将继续设置为 1。我猜 Next.nextInt() 会给您 1、2，然后是 3，然后是 4，等等。 2会转到默认情况