public void Draw(Graphics g) {
Graphics2D g2 = (Graphics2D) g;
g2.setColor(Color.red);
g2.draw(new Line2D.Double(getfirstX(), getfirstY(), getsecondX(), getsecondY()));
Ellipse2D circle1 = new Ellipse2D.Double(getfirstX() - 5, getfirstY() - 5, 10, 10);
Ellipse2D circle2 = new Ellipse2D.Double(getsecondX() - 5, getsecondY() - 5, 10, 10);
g2.draw(circle1);
g2.fill(circle1);
g2.draw(circle2);
g2.fill(circle2);
}
