public class Door
{
    public Door (Coordinate position, boolean horizontalRepresentation)
    {
        _location = position;
        _horizontal = horizontalRepresentation;
    }

    private Coordinate _location;
    private boolean _horizontal;
}
@@ -13,16 +13,110 @@
  Door%0A%7B%0A
+    public static final String START = %22AA%22;%0A    public static final String EXIT = %22ZZ%22;%0A    %0A
     publ

Update Door.java