Stupid question...How to close a Jframe?

I create an application that read an Xml file and print it in a JFrame.

The Xml files have an auto-updating process, and I want the Jframe to be updated too.

In my programm I create an another JFrame.

I know it's a little bit stupid, but i'm a beginner.

I just want to know 2 things:

1-how to destroy a Jframe ( It's very important for me)

2-It is possible to update the JFrame?

If you have exemple it's would be so great !

but just the way to do the things will be cool too

Thanks a lot and more ! and please excuse my poor english

you can mail me tojavanico@voila.fr

[647 byte] By [Javanico] at [2007-9-26 3:48:39]