Displaying HTML page from JFrame

Question

Hi ,
I have a JFrame GUI with menus and menu items. After Clicking on the Help Menu Item, I want to display a HTML page. Does anyone know of a function to display an HTML page?

Answer 1

import javax.swing.*;
import java.awt.*;
import java.io.*;
import java.awt.event.*;
import javax.swing.event.*;
// This class is used in the Image Tool class when the help menu item is selected
public class HelpMenu extends JInternalFrame implements HyperlinkListener{
// A new JEditorPane to display the help html file in.     
private JEditorPane jep;
     public HelpMenu () {
          super("Help Menu",
                    true, //resizable
                    true,     //closable
                    true,     //maximizable
                    true);     //iconifiable
          // Set the size and location of the frame
          setSize(500,500);
          setLocation(20,20);
          // create the JeditorPane
          jep = new JEditorPane( );
     jep.setEditable(false);
          // Make jep a scrollable pane
          JScrollPane jsp = new JScrollPane(jep);
     getContentPane( ).add(jsp, BorderLayout.CENTER);
          // Add a listener to listen for hyperlinks within the document
     jep.addHyperlinkListener(this);
     try {
     String HelpFile = "file:C:/Documents and Settings/Patrick/Desktop/Help.html";
     jep.setPage(HelpFile);
          // If the file can be loaded display the frame
          setVisible(true);
     catch(Exception e) {
          // The file could not be loaded.
          System.out.println(
               "Could not open help page! Has it been deleted from: C:/Documents and Settings/Patrick/Desktop/");
          // If the file can not be loaded display an error message
          JFrame f = new JFrame();
     JOptionPane.showMessageDialog(f, "Could not open help page! Has it been deleted from: C:/Documents and Settings/Patrick/Desktop/",
               "Help Menu", JOptionPane.WARNING_MESSAGE);
          // If the file cannot be loaded do not display a frame
          setVisible(false);
public void hyperlinkUpdate(HyperlinkEvent he) {
HyperlinkEvent.EventType type = he.getEventType( );
     if (type == HyperlinkEvent.EventType.ACTIVATED) {
try {
// set the page to show the selected section of the file
jep.setPage(he.getURL( ));
catch (FileNotFoundException e) {
catch (Exception e) {
}