Html viewing problem

Question

Can anyone see y this wont work propoerly? it loads the file fine but wont display it, all i get is a gray blank screen. I have two classes but am not sure how the interact! Thankyou for any help.
import java.io.*;
import java.net.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
class EditPaneExample extends JFrame implements HyperlinkListener{
private JEditorPane html;
final String sPath = System.getProperty("user.dir") + "/";
public EditPaneExample(){
     setTitle("Jims Applicatijim");
     setSize (500,300);
     setBackground(Color.gray);
     getContentPane().setLayout(new BorderLayout());
     JPanel topPanel = new JPanel();
     topPanel.setLayout(new BorderLayout());
     getContentPane().add(topPanel, BorderLayout.CENTER);
          try{
               //load the url
               URL url = new URL("file:///" + sPath + "Main.htm");
               //create the viewer
               html = new JEditorPane (url);
               html.setEditable(true);
               JScrollPane scrollPane = new JScrollPane();
               scrollPane.getViewport().add( html, BorderLayout.CENTER);
               SwingUtilities.invokeLater(new PageLoader(html,event.getURL(),cursor));
               //html.addHyperlinkListener(this);
          catch(MalformedURLException e){
               System.out.println("malformed url: " + e);
          catch(IOException e){
               System.out.println("IOException: " + e);
public void hyperlinkUpdate(HyperlinkEvent event){
     if (event.getEventType() == HyperlinkEvent.EventType.ACTIVATED){
          //load some cursor
          Cursor cursor = html.getCursor();
          Cursor waitCursor = Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR);
          html.setCursor(waitCursor);
          //handle the hyperlink change
          SwingUtilities.invokeLater(new PageLoader(html,event.getURL(),cursor));
public static void main ( String args[]){
     EditPaneExample mainFrame = new EditPaneExample();
     mainFrame.setVisible(true);
import java.io.*;
import java.lang.*;
import java.net.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
class PageLoader implements Runnable{
     private JEditorPane html;
     private URL url;
     private Cursor cursor;
     PageLoader(JEditorPane html, URL url, Cursor cursor){
          this.html = html;
          this.url = url;
          this.cursor = cursor;
          System.out.println("h2llo world");
     public void run(){
          if (url == null){
               html.setCursor(cursor);
               Container parent = html.getParent();
               parent.repaint();
          }else{
               Document doc = html.getDocument();
               try{
                    html.setPage(url);
               catch(IOException ioe ){
                    html.setDocument(doc);
               finally{
                    url = null;
                    SwingUtilities.invokeLater(this);
}

Answer 1

Generally, I've only ever seen the need to ensure the CHM is unblocked if it has been downloaded from the web. I could see where it could possibly occur if one moved the CHM from a network drive to a local drive, but I'm skeptical that would be required in that case.
Cheers... Rick