Scrolling a JTextPane within a JScrollPane

I have a problem which seems so elementary that I'm embarrassed to bring it up, but I can't find the solution through the javadocs or my other resources.

I have a JTextPane which I am using to display data, output only. I am placing it in a JScrollPane. What I want to do is have it scroll to the bottom when I add text to it. Manually setting the vertical scroll bar to its maximum value doesn't seem to work.

Can anyone help me with this?

Thanks!

You may try to work with the viewport.
Check this:
http://javaalmanac.com/egs/javax.swing.table/Vis.html?l=rel