import javafx.scene.paint.Color;
import javafx.scene.canvas.GraphicsContext;
public class Square
{
    private final Color color;
    private final double xCenter;
    private final double yCenter;
    private final double size;
    public Square(Color color, double xCenter, double yCenter, double size)
    {
        this.color = color;
        this.xCenter = xCenter;
        this.yCenter = yCenter;
        this.size = size;
    }
    public void draw(GraphicsContext pen)
    {
        //draw myself
        pen.setFill(color);
        pen.fillRect(xCenter - size/2, yCenter - size/2, size, size);
    }
}