Klasse Game

package ch.cleverbytes.job;

import java.util.ArrayList;
import java.util.Random;

public class Game
{
    private ArrayList<String> code;
    private ArrayList<ArrayList<String>> history = new ArrayList<>();
    public static final int NUMBER_OF_COLOR = 6;
    public static final int NUMBER_OF_PINS = 4;
    public static final String BLACK_PIN = "O";
    public static final String WHITE_PIN = "o";

    private Random rand = new Random();
    private ArrayList<String> colors = new ArrayList<>();

    public Game()
    {
        createCode();
    }

    /**
     *
     * @param code L�sung des Mastermind Spiels.
     */
    public Game(ArrayList<String> code)
    {
        this.code = code;
    }

    /**
     *
     * @param codeGuessed Geratener Farbcode
     * @return Ob der geratene Farbcode mit der L�sung �bereinspricht.
     */
    public boolean userGuesses(ArrayList<String> codeGuessed)
    {
        boolean allCorrect = true;
        history.add(codeGuessed);
        for (String s : codeGuessed)
        {
            int myIndex = codeGuessed.indexOf(s);

            if (s != code.get(myIndex))
            {
                allCorrect = false;
            }
        }
        return allCorrect;
    }

    /**
     *
     * @return Gibt die L�sung zur�ck
     */
    public ArrayList<String> getCode()
    {
        return code;
    }

    /**
     *
     * @return Gibt alle geratenen Farbcodes und ihre R�ckmeldungen zur�ck.
     */
    public ArrayList<Guess> getGuesses()
    {
        ArrayList<Guess> Guesses = new ArrayList<>();
        for(ArrayList<String> guess : history)
        {
            Guesses.add(new Guess(guess, getFeedback(guess)));
        }
        return Guesses;
    }

    private ArrayList<String> getFeedback(ArrayList<String> codeGuessed)
    {
        ArrayList<String> feedback = new ArrayList<>();
        for (String s : codeGuessed)
        {
            int myIndex = codeGuessed.indexOf(s);

            if (s == code.get(myIndex))
            {
                feedback.add(BLACK_PIN);
            } else if (code.contains(s))
            {
                feedback.add(WHITE_PIN);
            }
        }
        return feedback;
    }

    private void createCode()
    {
        colors.add("red");
        colors.add("green");
        colors.add("orange");
        colors.add("purple");
        colors.add("yellow");

        for (int i = 1; i <= NUMBER_OF_PINS; i++)
        {
            code.add(colors.get(rand.nextInt(colors.size() - 1)));
        }
    }
}