Tile

..
public class Tile { //abstract class
    ..
    public static Tile water = new WaterTile(Sprite.water);
    ..
    public static final int waterColor = 0xFF0026FF;
    ..
    public Tile(Sprite sprite) {
        this.sprite = sprite;
    }

    public void render(int x, int y, Screen screen) {

    }

    public boolean isSolid() {
        return false;
    }
}