Evento click em um Graphics

abstract class GraficElements{
	private int x, y, w, h;
	private Image img;

	abstract public void paint(Graphics g);

       //Todos os get e set  aqui...
}

public class Elements extends JPanel {

	public List<GraficElements> elements = new ArrayList<GraficElements>();

	public void paintComponent(Graphics g) {
		int i;
		for (i = 0; i < elements.size(); i++) {
			elements.get(i).paint(g);
		}
	}

	public List<GraficElements> getElements() {
		return elements;
	}

	public void addElemets(GraficElements ele) {
		elements.add(ele);
	}

	public void removeElements(int p) {
		elements.remove(p);
	}

	public int getSizeE() {
		return elements.size();
	}
}

public class ElementImage extends GraficElements {
	
	public ElementImage(int px, int py, int pw, int ph, String desImg) {
		setX(px);
		setY(py);
		setW(pw);
		setH(ph);
		setImg(new ImageIcon(desImg).getImage());
	}

	public void paint(Graphics g) {
		g.drawImage(getImg(), getX(), getY(), getW(), getH(), null);
		
	}
	
}

public class Main {

	JFrame frame = new JFrame();

	Elements elements = new Elements();

	ElementImage fundoImg = new ElementImage(0, 0, 800, 600, "fundo.png");
	ElementImage bt1 = new ElementImage(200, 100, 80, 50, "Botao1.png");
	ElementImage bt2 = new ElementImage(300, 100, 80, 50, "Botao2.png");



	public Main() {

		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setSize(800, 600);
		frame.setVisible(true);

		elements.addElemets(fundoImg);
		elements.addElemets(bt1);
		elements.addElemets(bt2);

        frame.getContentPane().add(elements);
        frame.repaint();

	}

	public static void main(String[] args) {
		FrameJogoCassanic fjc = new FrameJogoCassanic();
	}