A VPS should be fine for this. I just signed up last week for an amazing deal at less than $8 per month, and so far I'm amazed with it. I haven't yet installed JBoss, but no problems with other java containers so far. FULL root access and control - even iptables, and very cheap, if you can survive without a cpanel-stype interface, and are happy working via ssh. These guys have servers both in Europe and US, and are very economical in both places. A bare-bones bargain-basement, you have a choice of various linux server solutions, and are really only suitable if you are fully comfortable managing a complete Linux environment on your own from the shell, managing security, backups etc all on your own. That said, it is possible to pay for a standard cpanel-stype web interface, but this will more than double the cost. Ideal if you have experience in managing a linux distribution of your own. I've gone for ubuntu 12.04 LTS for the choice and ease of package installation. Performance is great - SSD-based storage, 4096GB memory , 1000GB bandwidth. All the details available at following link - http://my.iniz.com/aff.php?aff=098. You've started your search at very competitive moment in the market - shop around - you'll be amazed at the deals available these days - good luck!
Thank you very much for your help, I'm going to test this option.
$8 is very good price, and for me is good to manage my server throught ssh.