This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
I just learned (with Gregg's help) how to show a xml file in a GUI(JTree), now I got another question, could I reverse the process? I mean now I have JTree structure containing the xml file data, how could I get data from JTree representation and write(make) a new xml file with the data?