[ java] erreur de chargement ....

Bonjour, je commence juste la programmation en java et je me heurte a un probleme bien velu (pour moi). :-)

voila j'essaie d'ecrire ( recopier ) un applet permettant de générer du code html via un editeur en ligne . (zHTMLEditor)

le code se compile normalement, l'appletviewer me donne le resultat attendu mais lorsque j'insere l'applet dans ma page html ça ne marche pas :-((

voici se que m'affiche la console java :
=====================================================
Java Plug-in 1.5.0_04
Utilisation de la version JRE 1.5.0_04 Java HotSpot(TM) Client VM
...

java.lang.NoClassDefFoundError: zHTMLEditor$1
at zHTMLEditor.createToolBar(zHTMLEditor.java:155)
at zHTMLEditor.<init>(zHTMLEditor.java:58)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at sun.applet.AppletPanel.createApplet(Unknown Source)
at sun.plugin.AppletViewer.createApplet(Unknown Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Exception in thread "Thread-45" java.lang.NullPointerException
at sun.plugin.util.GrayBoxPainter.showLoadingError(Unknown Source)
at sun.plugin.AppletViewer.showAppletException(Unknown Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
java.lang.NullPointerException
at sun.plugin.util.GrayBoxPainter.showLoadingError(Unknown Source)
at sun.plugin.AppletViewer.showAppletStatus(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
======================================================

je ne comprend pas, voici le code que j'utilise :

======================================================

import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.*;
import javax.swing.text.html.*;
import java.awt.*;
import java.awt.event.*;
import java.net.URL;
import java.io.IOException;
import java.io.CharArrayWriter;
import java.io.CharArrayReader;
import java.io.Reader;
import java.util.Enumeration;
import java.util.Hashtable;

// Classe de fenetre Swing permettant de visualiser un
// document (HTML ou texte)
public class zHTMLEditor extends JApplet implements ActionListener
{
// Composant Swing permettant de visualiser un document
public JTextPane viewer = new JTextPane();
public JEditorPane sourcePane = new JEditorPane();
public JPanel panel = new JPanel();
public HTMLEditorKit k = new HTMLEditorKit();
public HTMLDocument doc = (HTMLDocument)k.createDefaultDocument();

public zHTMLEditor()
{
// Construction de l'Interface Graphique
// Panel en haut avec un label et le champ de saisie
viewer.setContentType("text/html");
viewer.setEditable (true);
viewer.setEditorKit(k);
viewer.setDocument(doc);
viewer.setText("<p></p>");

sourcePane.setContentType("text/plain");
sourcePane.setEditable (false);
showTree();

// Zone scrollee au centre avec le document
JScrollPane scrollPane = new JScrollPane (viewer);
JScrollPane scrollPane2 = new JScrollPane (sourcePane);
JPanel panel2 = new JPanel();
panel2.add(scrollPane, null);
panel2.add(scrollPane2, null);
panel2.setSize(200,200);

// Ajout des composants a la fenetre
setJMenuBar(createMenuBar());
panel.add(createToolBar(), BorderLayout.SOUTH);
getContentPane().add(scrollPane2, BorderLayout.SOUTH);
getContentPane().add(scrollPane, BorderLayout.CENTER);
getContentPane().add(panel, BorderLayout.NORTH);
}

public JMenuBar createMenuBar()
{
JMenuBar menubar = new JMenuBar();

JMenu color = new JMenu("Color");
color.add(new StyledEditorKit.ForegroundAction("Noir", Color.black));
color.add(new StyledEditorKit.ForegroundAction("Bleu", Color.blue));
color.add(new StyledEditorKit.ForegroundAction("Rouge", Color.red));
color.add(new StyledEditorKit.ForegroundAction("Jaune", Color.yellow));
menubar.add(color);

return menubar;
}

public JToolBar createToolBar()
{
JToolBar bar = new JToolBar();
JButton boldButton = new JButton();
JButton italicButton = new JButton();
JButton underlineButton = new JButton();
JButton colorButton = new JButton();
JButton cutButton = new JButton();
JButton copyButton = new JButton();
JButton pasteButton = new JButton();
JButton leftButton = new JButton();
JButton centerButton = new JButton();
JButton rightButton = new JButton();
JButton testButton = new JButton();
JButton linkButton = new JButton();
JButton imageButton = new JButton();
JButton h1Button = new JButton();
JButton h2Button = new JButton();
JButton h3Button = new JButton();

Action a = viewer.getActionMap().get("font-bold");
if (a != null)
{
boldButton = bar.add(a);
boldButton.setText("G");
}
a = viewer.getActionMap().get("font-italic");
if (a != null)
{
italicButton = bar.add(a);
italicButton.setText("I");
}
a = viewer.getActionMap().get("font-underline");
if (a != null)
{
underlineButton = bar.add(a);
underlineButton.setText("S");
}
bar.addSeparator();
a = viewer.getActionMap().get(StyledEditorKit.cutAction);
if (a != null)
{
cutButton = bar.add(a);
cutButton.setText("X");
}
a = viewer.getActionMap().get(StyledEditorKit.copyAction);
if (a != null)
{
copyButton = bar.add(a);
copyButton.setText("C");
}
a = viewer.getActionMap().get(StyledEditorKit.pasteAction);
if (a != null)
{
pasteButton = bar.add(a);
pasteButton.setText("V");
}
bar.addSeparator();
a = new StyledEditorKit.AlignmentAction("left",0);
if (a != null)
{
leftButton = bar.add(a);
leftButton.setText("<");
}
a = new StyledEditorKit.AlignmentAction("center",1);
if (a != null)
{
centerButton = bar.add(a);
centerButton.setText("-");
}
a = new StyledEditorKit.AlignmentAction("right",2);
if (a != null)
{
rightButton = bar.add(a);
rightButton.setText(">");
}
bar.addSeparator();
h1Button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
try
{
HTML.Tag htmlTag = HTML.Tag.H1;
Hashtable htmlAttribs = new Hashtable();
String selText = viewer.getSelectedText();
int selStart = viewer.getSelectionStart();
int textLength = selText.length();
String myAnchor = "";
viewer.select(selStart, selStart + textLength);
SimpleAttributeSet sasTag = new SimpleAttributeSet();
SimpleAttributeSet sasAttr = new SimpleAttributeSet();
//String newAnchor = "http://www.bsf-qc.com";
//htmlAttribs.put("href",newAnchor);
Enumeration attribEntries = htmlAttribs.keys();
while (attribEntries.hasMoreElements())
{
Object entryKey = attribEntries.nextElement();
Object entryValue = htmlAttribs.get(entryKey);
sasAttr.addAttribute(entryKey,entryValue);
htmlAttribs.remove(entryKey);
}
sasTag.addAttribute(htmlTag,sasAttr);
viewer.setCharacterAttributes(sasTag,false);
viewer.setText(viewer.getText());
viewer.select(selStart, selStart + textLength);
}
catch (Exception ignoredForNow) {}
}
});
h1Button.setText("Titre");
bar.add(h1Button);
h2Button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
try
{
HTML.Tag htmlTag = HTML.Tag.H2;
Hashtable htmlAttribs = new Hashtable();
String selText = viewer.getSelectedText();
int selStart = viewer.getSelectionStart();
int textLength = selText.length();
String myAnchor = "";
viewer.select(selStart, selStart + textLength);
SimpleAttributeSet sasTag = new SimpleAttributeSet();
SimpleAttributeSet sasAttr = new SimpleAttributeSet();
//String newAnchor = "http://www.bsf-qc.com";
//htmlAttribs.put("href",newAnchor);
Enumeration attribEntries = htmlAttribs.keys();
while (attribEntries.hasMoreElements())
{
Object entryKey = attribEntries.nextElement();
Object entryValue = htmlAttribs.get(entryKey);
sasAttr.addAttribute(entryKey,entryValue);
htmlAttribs.remove(entryKey);
}
sasTag.addAttribute(htmlTag,sasAttr);
viewer.setCharacterAttributes(sasTag,false);
viewer.setText(viewer.getText());
viewer.select(selStart, selStart + textLength);
}
catch (Exception ignoredForNow) {}
}
});
h2Button.setText("Titre 2");
bar.add(h2Button);
h3Button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
try
{
HTML.Tag htmlTag = HTML.Tag.H3;
Hashtable htmlAttribs = new Hashtable();
String selText = viewer.getSelectedText();
int selStart = viewer.getSelectionStart();
int textLength = selText.length();
String myAnchor = "";
viewer.select(selStart, selStart + textLength);
SimpleAttributeSet sasTag = new SimpleAttributeSet();
SimpleAttributeSet sasAttr = new SimpleAttributeSet();
//String newAnchor = "http://www.bsf-qc.com";
//htmlAttribs.put("href",newAnchor);
Enumeration attribEntries = htmlAttribs.keys();
while (attribEntries.hasMoreElements())
{
Object entryKey = attribEntries.nextElement();
Object entryValue = htmlAttribs.get(entryKey);
sasAttr.addAttribute(entryKey,entryValue);
htmlAttribs.remove(entryKey);
}
sasTag.addAttribute(htmlTag,sasAttr);
viewer.setCharacterAttributes(sasTag,false);
viewer.setText(viewer.getText());
viewer.select(selStart, selStart + textLength);
}
catch (Exception ignoredForNow) {}
}
});
h3Button.setText("Titre 3");
bar.add(h3Button);

testButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
showTree();
}
});
bar.add(testButton);
testButton.setText("Show Tree");

return bar;
}

public void init ()
{
setSize(600,600);
show();
}

public void actionPerformed (ActionEvent event)
{
}

public void showTree()
{
Reader reader = null;
char[] chars = getSource();
reader = new CharArrayReader(chars);
Document docum = new PlainDocument();
try
{
sourcePane.getEditorKit().read(reader, docum, 0);
}
catch (Exception ignoredForNow) {}
sourcePane.setDocument(docum);
}

public char[] getSource()
{
CharArrayWriter writer = null;
writer = new CharArrayWriter();
try{
viewer.getEditorKit().write(writer, viewer.getDocument(), 0, viewer.getDocument().getLength());
}
catch (Exception ignoredForNow) {}
return writer.toCharArray();
}

public String getTree()
{
return sourcePane.getText();
}
}

================================================

voila cela fait deux jours que je bloque dessus, donc si quelqu'un pouvait me filer un coup de pouce j'en serai ravis .

en vous remerciant d'avance.