14.3

public class Square extends GeometricObject implements Colorable{

public Square() {
// TODO Auto-generated constructor stub
}

protected Square(String color, int a,boolean filled) {
this.color = color;
this.a = a;
this.filled = filled;
}
@Override
public void howToColor() {
// TODO Auto-generated method stub
System.out.println("Color all four sides");
}

}