Loading String in JTextArea/JTextPane

Question

I'm trying to create an app that will display long Strings (veeerry looong and I know this is very easy) on the screen. When I display the String on screen, it should change the colors of certain text on the fly (much like many IDEs now). This is not necessarily required of the app but it would be good to have. My problem now lies in the fact that I originally used JTextArea, which worked very fine, loading the files very fast, too. Now, in order for me to be able to change the colors of the text, I have to switch to a JTextPane (not much change in code). I haven't even gotten to the point of making it change the text's colors, I've just changed my code to use JTextPane instead of JTextArea (shown below) but the speed of loading the file was so much affected. It's like the JTextPane is several times slower than JTextArea.
   //JTextArea txtDisplay = new JTextArea();
   JTextPane txtDisplay = new JTextPane();
   timer.start();
   txtDisplay.setText(aVeryLongString);
   timer.end();
   System.out.println(timer.status());
   ...After running this, using JTextArea, the timer.status() returns 3 seconds. Using the JTextPane() returns something like 10-15 seconds.
Appreciate help fom anyone.

Answer 1

Try something like this :
JTextPane txtDisplay = new JTextPane();
BufferedReader reader = new BufferedReader(new FileReader(big.txt));
String line = null;
while((line = reader.readLine()) != null) {
txtDisplay.insertString(txtDisplay.getDocument().getLength(),line,null);
Bye,
Evert