Dynamic image loading in a JPanel

Question

Hi,
I've created a JFrame which includes a JPanel and would like to dynamically add images to the JPanel (for a space invaders game). I've been getting the JPanel graphics object casting to Graphics2D and then passing it to the Actor class constructor where the sprite is loaded as a BufferedImage and then called drawImage on the Graphics object but the sprite does not display. It's been suggested that I need to use a new JPanel for every sprite that gets loaded, but this would seem to be less efficient.
public class NewJFrame extends javax.swing.JFrame {
    public static NewJFrame root;
    public NewJFrame() {
        initComponents();
        root = this;
       Graphics2D g = (Graphics2D) jPanel1.getGraphics(); 
       new Actor(g);
public class Actor {
    public Actor(Graphics g){
        try {
        BufferedImage sprite = ImageIO.read(new File("/Users/administrator/Desktop/image.jpg"));
        g.drawImage(sprite, 0, 0, null);
        } catch (IOException e) { System.out.println(e);}
    }Thanks

Answer 1

The problem with doing it this way if I understand correctly is that if I overload the paintComponent method of the panel I'm trying to draw on this will be static i.e. you can't pass parameters (such as a the url of the graphic to load or number of graphics to load) to the paintComponent method (it only accept Graphics g as a parameter). In other words the panel can only be drawn on once.