JTextPane.setText(String) - New line problem

Question

Hello.
I'm usin a JTextPane for a small editor I need.
I'm using it for it's ability to use HTML format codes (<font color = #color>string</font> for a singular line);
Now, It's loading lines from a text file. Then, I made a function to parse the array data into a singular string, and return it.
It's along the lines of
String parseArrayToString(String[] data) {
    String returnString = "";
    for(String s : data)
        returnString += s+"\n";
    return returnString;
}This worked for JTextArea, but not for this.
Is there any way to do this using JTextPane?

Answer 1

More or less straight from from the number 2 google hit...
package forums;
// a slighty cleaned up version of:
// http://www.java2s.com/Code/Java/Swing-JFC/JTextPanedemowithvariousformatandhtmlloadingandrenderering.htm
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;
import javax.swing.text.Document;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
public class JTextPaneDemo extends JPanel
  private static final long serialVersionUID = 1L;
  private static final SimpleAttributeSet ITALIC_GRAY = new SimpleAttributeSet();
  private static final SimpleAttributeSet BOLD_BLACK = new SimpleAttributeSet();
  private static final SimpleAttributeSet BLACK = new SimpleAttributeSet();
  static {
    StyleConstants.setForeground(ITALIC_GRAY, Color.gray);
    StyleConstants.setItalic(ITALIC_GRAY, true);
    StyleConstants.setFontFamily(ITALIC_GRAY, "Helvetica");
    StyleConstants.setFontSize(ITALIC_GRAY, 14);
    StyleConstants.setForeground(BOLD_BLACK, Color.black);
    StyleConstants.setBold(BOLD_BLACK, true);
    StyleConstants.setFontFamily(BOLD_BLACK, "Helvetica");
    StyleConstants.setFontSize(BOLD_BLACK, 14);
    StyleConstants.setForeground(BLACK, Color.black);
    StyleConstants.setFontFamily(BLACK, "Helvetica");
    StyleConstants.setFontSize(BLACK, 14);
  private JTextPane textPane = new JTextPane();
  public JTextPaneDemo() {
    textPane.setPreferredSize(new java.awt.Dimension(640, 480));
    JScrollPane scrollPane = new JScrollPane(textPane);
    add(scrollPane, BorderLayout.CENTER);
    appendText("\nHere's", BLACK);
    appendText(" Duke Baby", BOLD_BLACK);
    appendText("!\n\n", BLACK);
    textPane.insertIcon(new ImageIcon("C:/Java/home/src/crap/Java2D/images/duke.gif"));
    appendText("\n\nIsn't he just so cute ;-)\n\n", ITALIC_GRAY);
    JButton btnLoad = new JButton("Load web-page: The Java Tutorials");
    btnLoad.addActionListener(
      new ActionListener() {
        public void actionPerformed(ActionEvent evt) {
          textPane.setEditable(false);
          try {
            textPane.setPage("http://java.sun.com/docs/books/tutorial/");
          } catch (IOException e) {
            e.printStackTrace();
    textPane.insertComponent(btnLoad);
    setVisible(true);
  private void appendText(String text, AttributeSet attributes) {
    try {
      Document doc = textPane.getDocument();
      doc.insertString(doc.getLength(), text, attributes);
    } catch (BadLocationException e) {
      e.printStackTrace();
  private static void createAndShowGUI() {
    JFrame frame = new JFrame("JTextPane Demo");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.getContentPane().add(new JTextPaneDemo());
    frame.pack();
    frame.setLocationRelativeTo(null);
    frame.setVisible(true);
  public static void main(String[] args) {
    javax.swing.SwingUtilities.invokeLater(new Runnable() {
      public void run() {
        createAndShowGUI();
}Cheers. Keith.