9 шариков - логическая игра и как правильно ее реализовать ?

class Player {
 
    private String name;
    private int[] cells = new int[9];
 
    public String getName() {
        return name;
    }
 
    public void setName(String name) {
        this.name = name;
    }
 
    public void setBalls(int cell, int value) {
        cells[cell] = value;
    }
 
    public int getBalls(int cell) {
        return cells[cell];
    }
}
 
class BattleField {
    private Player playerOne;
    private Player playerTwo;
 
    public Player getPlayerOne() {
        return playerOne;
    }
 
    public void setPlayerOne(Player playerOne) {
        this.playerOne = playerOne;
    }
 
    public Player getPlayerTwo() {
        return playerTwo;
    }
 
    public void setPlayerTwo(Player playerTwo) {
        this.playerTwo = playerTwo;
    }
}