Número de dígitos Java

  public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int num = input.nextInt();

        int count = 0;

        while (num > 0) {
            num /= 10;
            count++;
        }
        System.out.println("number of digits: " + count);
    }
Chathumal Sangeeth