How to make JScrollPane autoscroll down on a JTextArea ?

[Tomer Gal]

I've built a chat application ,
problem is that when the application appends the chat string to the text area the JScrollPane doesn't automatically scroll down in order for the entered text to be shown.
What is the solution ?

Thanks in advanced guys

[Michael Dunn]

textArea.setCaretPosition(textArea.getDocument().getLength());

[Tomer Gal]

Thanks Michael , You saved me a lot of trouble man , Thanks