import java.awt.*; class Quadrato extends Rectangle { public int abscissa; public int ordinata; public Quadrato(int abscissa, int ordinata) { super(abscissa, ordinata, 10, 10); this.abscissa = abscissa; this.ordinata = ordinata; } public void paint(Graphics g) { g.fillRect(abscissa,ordinata,10,10); } }