Square.java

package Instrukcja1;

public class Square extends Figure implements Printable {
    double a;

    Square(double side) {
        a = side;
    }

    public double calculateArea() {
        return a * a;
    }

    public double calculatePerimeter() {
        return 4 * a;
    }

    public void print() {
        System.out.println("Kwadrat");
        System.out.println(String.format("Bok: %.2f", a));
        System.out.println(String.format("Pole: %.2f", calculateArea()));
        System.out.println(String.format("Obwod: %.2f", calculatePerimeter()));
    }

}