Back-up - Weektaak 3

import java.util.Scanner;

public class Squared {

    static int totalPlayer1 = 0;
    static int totalPlayer2 = 0;

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        startGame();

        while (true) {
            System.out.println("Wil je extra getallen? Gebruik 'N' om te stoppen, gebruikt 'J' om door te gaan");
            String input = scanner.nextLine();

            if (input.equals("N".toLowerCase())) {
                changePlayer2();
                System.out.println("Player 2 kreeg: " + totalPlayer2);
                checkEndGame(totalPlayer1, totalPlayer2);
                break;
            } else if (input.equals("J".toLowerCase())) {
                changePlayer1();
                System.out.println("Nieuw totaal: " + totalPlayer1);
                checkMidGame(totalPlayer1, totalPlayer2);
            } else {
                System.out.println("Sorry, dat is geen geldige input");
            }
        }
    }

    // Tried to make it so this could have a variable as the arg, didn't get it to work
    public static double changePlayer1() {
        // Plus 1 so it is atleast 1 and not 0
        double randomInt = (int) (11 * java.lang.Math.random() + 1);
        totalPlayer1 += randomInt;

        return randomInt;
    }

    public static double changePlayer2() {
        // Plus 18 so it is atleast 16 and not 0
        double randomInt = (int) (8 * java.lang.Math.random() + 18);
        totalPlayer2 += randomInt;

        return randomInt;
    }

    public static void startGame() {
        for (int i = 1; i <= 2; i++) {
            double returnedValue = changePlayer1();

            System.out.println("Getal " + i + ": " + returnedValue);
        }
        System.out.println("Totaal: " + totalPlayer1);
    }

    public static void checkMidGame(int scoreOne, int scoreTwo) {
        if (scoreOne == 21) {
            endGame(true);
        } else if (scoreOne > 21) {
            endGame(false);
        }
    }

    public static void checkEndGame(int scoreOne, int scoreTwo) {
        if (scoreTwo <= scoreOne || scoreTwo > 21) {
            endGame(true);
        } else {
            endGame(false);
        }
    }

    public static void endGame(boolean won){
        if (won){
            if (totalPlayer1 == 21){
                System.out.println("Je hebt gewonnen! (Op de 21 gekomen)");
            } else{
                System.out.println("Je hebt gewonnen! (Player 1: " + totalPlayer1 + " vs Player 2: " + totalPlayer2 + ")");
            }
        } else{
            if (totalPlayer1 > 21){
                System.out.println("Je hebt verloren! (Boven de 21 gekomen)");
            } else{
                System.out.println("Je hebt verloren! (Player 1: " + totalPlayer1 + " vs Player 2: " + totalPlayer2 + ")");
            }
        }
        System.exit(0);
    }
}