Image trouble in application + comments on code ?

Question

I have tried to insert an image in this slowly-becoming application but it won't work.
I have commented the parts that don't work (the paint method).
The error only occurs when I un-comment the Paint-method.
It would also be great if you would like to give some comments on my code, this is my first 'project' and I'm going to be grateful for any feedback.
thanks,
David
Here's my code:
import java.awt.*;
import java.awt.image.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.Toolkit;
public class MainWindow {
public JFrame frame;
public Image img;
     public MainWindow() {
          frame = new JFrame("App. Title here");
          frame.setResizable(false);
          frame.setSize(620,420);
          frame.setBackground(Color.white);
          frame.setDefaultCloseOperation(frame.EXIT_ON_CLOSE);
          JPanel panel = new JPanel();
          Font font = new Font("Verdana", Font.BOLD, 12);
          JLabel heading = new JLabel("Application Heading");
          heading.setFont(font);
          heading.setBackground(Color.white);
          heading.setOpaque(true);
          img = Toolkit.getDefaultToolkit().getImage("image.jpg");
          buildMenu();
          panel.add(heading);
          frame.setContentPane(panel);
          frame.setVisible(true);
     public void buildMenu() {
          JMenuBar mb = new JMenuBar();
          JMenu menu = new JMenu("File");
          JMenuItem item = new JMenuItem("Exit");
          //Closes the application from the Exit menu item.
          item.addActionListener(new ActionListener() {
               public void actionPerformed(ActionEvent e) {
                    System.exit(0);
          menu.add(item);
          mb.add(menu);
          frame.setJMenuBar(mb);
     public static void main(String[] args) {
          try {
               UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
          catch (Exception err) {
               System.out.println("Error loading Look & Feel: "+ err);
          MainWindow SplashScreen = new MainWindow();
     public void paint(Graphics g) {
          g.drawImage(img, 4, 20, this);
}

Answer 1

Thanks for your reply, but another problem has occured.
The image shows up now, which is great, but the menu doesn't ? I have tried to find the problem with no luck.
Here's my code:
many thanks,
David
import java.awt.*;
import java.awt.image.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.Toolkit;
public class MainWindow_new extends JFrame { // JWindow for splashScreen
public JFrame frame;
public Image img;
     public MainWindow_new() {
          super("App. Title here");
          setResizable(false);
          setSize(620,420);
          setBackground(Color.white);
          setDefaultCloseOperation(frame.EXIT_ON_CLOSE);
          JPanel panel = new JPanel();
          Font font = new Font("Verdana", Font.BOLD, 12);
          MediaTracker tracker = new MediaTracker(this);
          img = Toolkit.getDefaultToolkit().getImage("images\\jpgs\\arena.jpg");
          try {
               tracker.addImage(img, 0);
               tracker.waitForID(0);
          catch (InterruptedException err) {
               System.out.println("MediaTracker Interrupted");
               err.printStackTrace();
          buildMenu();
          setContentPane(panel);
          setVisible(true);
     public void buildMenu() { // Opens buildMenu method definition
          JMenuBar mb = new JMenuBar();
          JMenu menu = new JMenu("File");
          JMenuItem NewItem = new JMenuItem("New Game");
          JMenuItem LoadItem = new JMenuItem("Load Game");
          JMenuItem ExitItem = new JMenuItem("Exit");
          //Closes the application from the Exit menu item.
          ExitItem.addActionListener(new ActionListener() { // Opens addActionListener method
               public void actionPerformed(ActionEvent e) { // Opens actionPerformed method
                    System.exit(0);
          menu.add(NewItem);
          menu.add(LoadItem);
          menu.addSeparator();
          menu.add(ExitItem);
          mb.add(menu);
          setJMenuBar(mb);
     public static void main(String[] args) {
          try {
               UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
          catch (Exception err) {
               System.out.println("Error loading Look & Feel: "+ err);
          MainWindow_new mainWindow = new MainWindow_new();
     public void paint(Graphics g) {
          g.drawImage(img,10,10,this);
}