Image Path Java To Exe / Jar File

I already done my program with images on it but when i convert it to exe , the images is not appearing.

Usually my images are located at documents netbeansprojectprojectimage.jpg

When i run the code on netbeans the images are appearing but when i convert it to exe or jar file run on a computer without netbeans.. images is not appearing ...

import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.ImageIcon;

class Phonebook extends JFrame {
private static final int WIDTH = 430;
private static final int HEIGHT = 200;
public Phonebook()

[Code] ....