Do-while 不會循環返回

Question

所以我正在研究一個涉及二進制轉換等的問題。但我的問題是，每當 catch 塊完成執行時，我似乎無法使代碼中的 do-while 語句循環回送。 這是我的代碼。

System.out.println("This program converts a binary value to its decimal counterpart.\n");
    Scanner input = new Scanner(System.in);
    boolean invalidInput = true;

    do {

        try {
            System.out.print("(>) Enter the value to be converted: ");
            String numberToConvert = input.nextLine();
            long converted = Long.parseLong(numberToConvert, 2);
            System.out.println("(>) Decimal value of " + numberToConvert + " is : " + converted + "\n");
            invalidInput = false;
        } catch (Exception e) {
            System.out.println("(!) Entered value is non binary, please try again.\n");
            input.next();
        }

    } while (invalidInput);

Answer 1

從 catch 塊中刪除 input.next() 然后嘗試：-

    System.out.println("This program converts a binary value to its decimal counterpart.\n");
    Scanner input = new Scanner(System.in);
    boolean invalidInput = true;

    do {

        try {
            System.out.print("(>) Enter the value to be converted: ");
            String numberToConvert = input.nextLine();
            long converted = Long.parseLong(numberToConvert, 2);
            System.out.println("(>) Decimal value of " + numberToConvert + " is : " + converted + "\n");
            invalidInput = false;
        } catch (Exception e) {
            System.out.println("(!) Entered value is non binary, please try again.\n");
        }

    } while (invalidInput);