Hyperlink in JTextPane - It's not a hyperlink, what's wrong?

Question

Hi,
I tried to insert a hyperlink into a JTextPane, but it looks like normal text and it has to much space to the rest of the inserted text, when refencing the JTextPane-Object "txtPane" to a HyperlinkListenerImpl()-Objekt and insert the strings with the method addHyperlinkA(url, sTxtSplit). Do you have any idea what the problem is? Here is the complete sourcecode.
Best regards,
Thomas
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Insets;
import java.awt.Point;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.JTextPane;
import javax.swing.event.HyperlinkEvent;
import javax.swing.event.HyperlinkListener;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.Document;
import javax.swing.text.Element;
import javax.swing.text.MutableAttributeSet;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
import javax.swing.text.html.HTML;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLEditorKit;
public class HyperPane extends JFrame {
private JTextField txtField;
private JTextPane txtPane;
private Cursor handCursor = new Cursor(Cursor.HAND_CURSOR);
private Cursor defaultCursor = new Cursor(Cursor.DEFAULT_CURSOR);
private HTMLDocument document;
private MutableAttributeSet attributes = new SimpleAttributeSet();
private int linkID = 0;
public HyperPane() {
this.setSize(500, 500);
this.setTitle("HyperPane");
initGUI();
Dimension fsize = this.getSize(),
ssize = Toolkit.getDefaultToolkit().getScreenSize();
int fX = (ssize.width - fsize.width)/2,
fY = (ssize.height - fsize.height)/2;
this.setLocation(fX, fY);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setVisible(true);
public static void main(String args[]) {
JFrame.setDefaultLookAndFeelDecorated(true);
new HyperPane();
private void initGUI() {
Container contentPane = this.getContentPane();
contentPane.setLayout(new BorderLayout());
txtPane = new JTextPane();
//document = (HTMLDocument)txtPane.getStyledDocument();
document = new HTMLDocument();
//attributes = new SimpleAttributeSet();
txtPane.setEditorKit(new HTMLEditorKit());
txtPane.setDocument(document);
txtPane.setEditable(false);
txtPane.setMargin(new Insets(5, 5, 5, 5));
//LinkControllerB lc = new LinkControllerB();
//txtPane.addMouseListener(lc);
//txtPane.addMouseMotionListener(lc);
// txtPane.addHyperlinkListener(new HyperlinkListener() {
// public void hyperlinkUpdate(HyperlinkEvent he) {
// System.out.println("link");
txtPane.addHyperlinkListener(new HyperlinkListenerImpl());
contentPane.add(new JScrollPane(txtPane), BorderLayout.CENTER);
contentPane.add(createInputPanel(), BorderLayout.SOUTH);
private JPanel createInputPanel() {
JPanel panel = new JPanel();
txtField = new JTextField(30);
txtField.setText("text before link -> http://www.denic.de <- text after link");
JButton butAdd = new JButton("Hinzuf�gen");
butAdd.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
parseMsg(txtField.getText());
panel.setLayout(new FlowLayout());
panel.add(txtField);
panel.add(butAdd);
return panel;
private void parseMsg(String sTxt) {
SimpleAttributeSet hrefAttr = new SimpleAttributeSet();
String[] sTxtSplit = sTxt.split(" ");
for (int i = 0; i < sTxtSplit.length; i++) {
int iHttpPos = sTxtSplit[i].indexOf("http:");
System.out.println(sTxtSplit[i]);
if (sTxtSplit[i].indexOf("http:") > -1) {
try {
URL url = new URL(sTxtSplit[i]);
addHyperlinkA(url, sTxtSplit[i]);
} catch (MalformedURLException male) {
} else {
try {
document.insertString(document.getLength(), sTxtSplit[i] + " ", attributes);
} catch (Exception e) {
e.printStackTrace();
try {
document.insertString(document.getLength(), "\n\n", attributes);
} catch (Exception e) {
e.printStackTrace();
public void addHyperlink(URL url, String text) {
try {
SimpleAttributeSet attrs = new SimpleAttributeSet();
StyleConstants.setUnderline(attrs, true);
StyleConstants.setForeground(attrs, Color.BLUE);
//attrs.addAttribute(ID, new Integer(++linkID));
attrs.addAttribute(HTML.Attribute.HREF, url.toString());
document.insertString(document.getLength(), text, attrs);
catch (BadLocationException e) {
e.printStackTrace(System.err);
private void addHyperlinkA(URL url, String text) {
try {
MutableAttributeSet hrefAttr = new SimpleAttributeSet();
hrefAttr.addAttribute(HTML.Attribute.HREF, url.toString());
SimpleAttributeSet attrs = new SimpleAttributeSet();
attrs.addAttribute(HTML.Tag.A, hrefAttr);
document.insertString(document.getLength(), text + " ", attrs);
} catch (BadLocationException e) {
e.printStackTrace(System.err);
public void addHyperlinkB(URL url, String text) {
// First, setup the href attribute for <A> tag.
SimpleAttributeSet hrefAttr = new SimpleAttributeSet();
hrefAttr.addAttribute(HTML.Attribute.HREF, url.toString());
// Second, setup the <A> tag
SimpleAttributeSet attrs = new SimpleAttributeSet();
attrs.addAttribute(HTML.Tag.A, hrefAttr);
// Apply the hyperlink onto the selected content.
// textPane is a reference to the JTextPane instance.
int p0 = txtPane.getSelectionStart();
int p1 = txtPane.getSelectionEnd();
if (p0 != p1) {
//StyledDocument doc = txtPane.getStyledDocument();
document.setCharacterAttributes(p0, p1 - p0, attrs, false);
class HyperlinkListenerImpl implements HyperlinkListener {
public void hyperlinkUpdate(HyperlinkEvent event) {
JTextPane pane = (JTextPane)event.getSource();
HyperlinkEvent.EventType type = event.getEventType();
System.out.println("hyperlinkUpdate");
if (type == HyperlinkEvent.EventType.ENTERED) {
pane.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
System.out.println("type == HyperlinkEvent.EventType.ENTERED");
} else if (type == HyperlinkEvent.EventType.EXITED) {
pane.setCursor(Cursor.getDefaultCursor());
System.out.println("type == HyperlinkEvent.EventType.EXITED");
} else if (type == HyperlinkEvent.EventType.ACTIVATED){
pane.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
System.out.println("type == HyperlinkEvent.EventType.ACTIVATED");
// if (event instanceof HTMLFrameHyperlinkEvent) {
// HTMLDocument doc = (HTMLDocument)pane.getDocument();
// doc.processHTMLFrameHyperlinkEvent((HTMLFrameHyperlinkEvent)event);
// System.out.println("event instanceof HTMLFrameHyperlinkEvent");
// } else{
// try {
// pane.setPage(event.getURL());
// } catch(IOException ex){
// ex.printStackTrace();
class LinkControllerB extends HTMLEditorKit.LinkController {
public void mouseMoved(MouseEvent ev) {
System.out.println("mouseMoved");
public void mouseClicked(MouseEvent e) {
JTextPane editor = (JTextPane) e.getSource();
if (!editor.isEditable()) {
Point pt = new Point(e.getX(), e.getY());
int pos = editor.viewToModel(pt);
if (pos >= 0) {
System.out.println("mouseclicked at pos: " + pos);
class LinkController extends MouseAdapter
implements MouseMotionListener {
public void mouseMoved(MouseEvent ev) {
JTextPane txtPane = (JTextPane) ev.getSource();
System.out.println("mousemoved");
if (!txtPane.isEditable()) {
Point pt = new Point(ev.getX(), ev.getY());
int pos = txtPane.viewToModel(pt);
if (pos >= 0) {                   
Document doc = txtPane.getDocument();
if (doc instanceof HTMLDocument) {
HTMLDocument hdoc = (HTMLDocument) doc;
Element e = hdoc.getCharacterElement(pos);
AttributeSet a = e.getAttributes();
String href = (String) a.getAttribute(HTML.Attribute.HREF);
if (href != null) {
System.out.println("href != null");
// if (isShowToolTip()){
// txtPane.setToolTipText(href);
// if (isShowCursorFeedback()) {   
// if (txtPane.getCursor() != handCursor) {
// txtPane.setCursor(handCursor);
else {
System.out.println("href == null");
// if (isShowToolTip()){
// txtPane.setToolTipText(null);
// if (isShowCursorFeedback()) {   
// if (txtPane.getCursor() != defaultCursor) {
// txtPane.setCursor(defaultCursor);
} else {
//setToolTipText(null);
public void mouseDragged(MouseEvent e) {
public void mouseClicked(MouseEvent e) {
JTextPane editor = (JTextPane) e.getSource();
if (! editor.isEditable()) {
Point pt = new Point(e.getX(), e.getY());
int pos = editor.viewToModel(pt);
if (pos >= 0) {
System.out.println("mouseclicked at pos: " + pos);

Answer 1

Hi thechrimsonrabbit,
Is your home page ''about:home'' or is it ''http://www.google.com''. The ''about:home'' is the default Firefox home page with a google search built in. The second link is the actual google page. You might want to save that as your home page if you want all the extra tabs.
Hopefully this helps!