[JAVA] Need help with encryption?

I’m writing an email address and pass to be stored in a .db file, but it can easily be stolen by just reading it. How can I encrypt it without being easily decrypted by an outside source? I also need to be able to decrypt it for the program.

Can I use Java’s Security/Crypto API or do I have to create my own encryption method? And how can I make sure that someone can’t just decompile my .class file and read the algorithm?

Thanks a bunch, giving out best answer,
~Arthur
SOLVED, PLEASE ANSWER MY NEW ENCRYPTION QUESTION: http://answers.yahoo.com/question/index?qid=20110221154027AAbXZoP

I just want to confirm if anyone has ever used Google Chrome on Mandriva 2009.0.
NOT on 2009.1 or 2010

if yes, could you please give me links to the rpm and procedures how you successfully got it to work? thanks a bunch.

I need it badly. My boss wants me to test a site in Google Chrome but I can’t since my workstation here at the office uses Mandriva 2009.0 and it’s my first time to work with a Linux OS.
Thank you hawklord. I have come to that conclusion as well. Now, I want to know how could I update Mandriva to 2010.1? I’m a newbie with Linux OS. Thanks