Background Image in JDesktopPane

caranya menambahkan background image ke dalam JDesktopPane di NetBeans IDE ? Nah kalau bingung, sekarang buatlah sebuah project dahulu di NetBeans IDE kemudian buatlah 1 buah Java Class dengan nama JImageDesktopPane (Nama CLass bisa diganti ya) .berikut source codenta :

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37

/* * To change this template, choose Tools | Templates * and open the template in the editor. */ package jdesktoppanebackground;   import java.awt.Graphics; import java.awt.Image; import javax.swing.JDesktopPane;   /** * * @author Martinus Ady H <mrt.itnewbies@gmail.com> */ public class JImageDesktopPane extends JDesktopPane {   private Image image;   public JImageDesktopPane() { }   @Override protected void paintComponent(Graphics g) { try { image = new javax.swing.ImageIcon(getClass().getResource("netbeans6ns0.png")).getImage();   if (g != null) { g.drawImage(image, (this.getSize().width - image.getWidth(null)) / 2, (this.getSize().height - image.getHeight(null)) / 2, null); } } catch (NullPointerException npe) { System.out.println("Can't find images !!"); } } }