Hi,
I am writing a swing application that reads xml files and displays xml
source and transformed html in two JEditorPanes, both inside JScrollPanes.
When the file loads, by default the view of the source gets scrolled down
to the bottom. I'm trying to set the scrollbar position at the top, by
calling:

editorScrollPane.getViewport().setViewPosition(new Point(0,0));

However this only works in certain places in my code, and not elsewhere.
For example, in my init() I can do:

...
editorScrollPane.getViewport().add(editorPane, null);
editorPane.setText("some long string \n\n\n\n\n\n\n\n\n\n");
editorScrollPane.getViewport().setViewPosition(new Point(0,0));
...

which works fine. I can also do:

public void resetScrollBarButtonPressed() {
   editorScrollPane.getViewport().setViewPosition(new Point(0,0));
}

and when a user presses the button this works too. However, what I want to
do is load a file via menu, and have and then immediately set the scrollbar
to the top of the display in the same method, like this:

//File | Load action performed
public void jMenuFileLoad_actionPerformed(ActionEvent e) {
     File file = jFileChooser1.getSelectedFile();
     String filename = file.getAbsolutePath();
     try {
       editorPane.setText("");

       // Parse the xml file
       document=documentBuilder.parse(file);

       // Convert the xml document to string for display
       editorPane.setText(writeNode(document, ""));

     } catch (IOException ioe) {
       log("IOException: " + ioe.getMessage());
     } catch (org.xml.sax.SAXException se) {
       log("SAXException: " +se.getMessage());
     }
 
     editorScrollPane.getViewport().setViewPosition(new Point(0,0));
}
   

this doesn't work and I have no idea why. I've wasted a couple hours
looking for a solution online and found nothing useful. Can anybody tell me?
I must be missing something basic.

thanks,
matt