Line wrapping should normally occur when inserting a document in a
JTextPane, right?
Well for some reason it doesn't happen when inserting an HTML document
read from a File. If you execute the code below, the content of the
HTML page is displayed in a single line. Embedding the JTextPane inside
a JScrollPane didn't change a thing.

public class TextComponentDemo extends JFrame {
   JTextPane textPane;

   public TextComponentDemo() {

       textPane = new JTextPane();
       try {
       HTMLEditorKit editorKit = new HTMLEditorKit();
       HTMLDocument HTMLDoc =
(HTMLDocument)editorKit.createDefaultDocument();
       FileReader in = new FileReader("simple.html"); // Simple HTML
file with normal English text
       editorKit.read(in, HTMLDoc, 0);
       textPane.setPreferredSize(new Dimension(200, 200));
       textPane.setMaximumSize(new Dimension(200, 200));
       textPane.setSize(new Dimension(200, 200)); // setting all those
size attributes didn't change anything :(
       textPane.setDocument(HTMLDoc);}
       catch(Exception e) {e.printStackTrace();}

       JScrollPane scrollPane = new JScrollPane(textPane);
       scrollPane.setPreferredSize(new Dimension(200, 200));
       getContentPane().add(scrollPane);
   }

   private static void createAndShowGUI() {

       final TextComponentDemo frame = new TextComponentDemo();
       frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
       frame.pack();
       frame.setVisible(true);
   }

   public static void main(String[] args) {
       javax.swing.SwingUtilities.invokeLater(new Runnable() {
           public void run() {
               createAndShowGUI();
           }
       });
   }
}

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Any idea why this happens?