Galactic Monopoly

abstract class Square{  private String name;  private Player owner;  private int groupID;  public Square(String name, int groupID) {}  public String name() {}  public Player owner() {}  public int houses() {}  public boolean canBuy() {}  public boolean canBuyHouse() {}  public void setOwner(Player p) {}  public void addHouse() {}  public abstract void playerEnter(Player p, int throw) {}  public abstract void playerPass(Player p) {}  public abstract void playerUse(Player p) {}}