Urgent Tricky problem... I challenge you all....

Question

I'm working on a very cool freeware Java text editor, that is working beautifully, except for the code used to change the color of reserved words, etc, on the fly...
At the moment, I use a documentlistener. When text is inserted, I need to color some of that text automatically. However, when I try to call setCharacterAttributes in DefaultStyledDocument, it causes a runtime exception, Illegal State Exception (Attempt to mutate in notification)>
I understand how this exception is caused, but how do I get around it?

Answer 1

Hi,
You'll need to modify the color after your DocumentListener event handling is finished.
SwingUtilities.invokeLater( new Runnable() {
  public void run() {
    //setCharacterAttributes ...
});Then the change is done when the document is no longer locked.
Hope this helps,
Kurt.