Zad3

package com.dawciobiel;

import java.util.Scanner;

import static java.lang.System.*;

/**
 * https://kobietydokodu.pl/niezbednik-juniora-dobre-praktyki-dla-poczatkujacego-programisty/
 */
public class Zad3 { //todo Rename to proper class name

    private final int MIN_VALUE = 10;
    private final int MAX_VALUE = 99; // fixme 99 or 90?

    private final Scanner sc;

    public Zad3() {
        sc = new Scanner(in);

        int number = getFirstNumberFromUser();
        out.println(units(number));
        out.println("Dziękujemy!");

        getSecondNumberFromUser(number);
    }

    public static void main(String[] args) {
        new Zad3();
    }

    private int getFirstNumberFromUser() {
        int number;
        do {
            out.println("Enter the first number between (" + MIN_VALUE + "; 90) : "); // fixme 90 or MAX_VALUE (99)?
            number = sc.nextInt();
        }
        while (!isValueInRange(number));
        return number;
    }

    private void getSecondNumberFromUser(int firstNumber) {
        int secondNumber;
        int tensOfSecondNumber;
        do {
            out.println("Enter the second number between (" + MIN_VALUE + "; 90): "); // fixme 90 or MAX_VALUE (99)?
            secondNumber = sc.nextInt();
            tensOfSecondNumber = tens(secondNumber);
            out.println("Tens of (" + secondNumber + ") is: " + tensOfSecondNumber);
        }
        while (!isValueInRange(secondNumber) || tensOfSecondNumber == units(firstNumber));
    }

    private int units(int number) {
        return number % 10;
    }

    private int tens(int number) {
        return (number % 100) / 10;
    }

    /**
     * Verify number it between (MIN_VALUE; MAX_VALUE).
     *
     * @param number number to verify
     * @return true - if value in range
     * false - otherwise.
     */
    private boolean isValueInRange(int number) {
        return (MIN_VALUE < number && number < MAX_VALUE);
    }
}