I’m working on a small (java) project where a website needs to maintain a (preferably comma-separated) list of registered e-mail addresses, nothing else, and be able to check if an address is in the list. I have no control over the hosting or the server’s lack of database support.
Prevayler seemed a good solution, but the website is a ghost town, with example code missing from just about everywhere it’s supposed to be, so I’m a little wary.
What other options are recommended for such a task?
Use an embedded database like HSQLDB, H2 or Derby/JavaDB. They need no installation and can use simple files as their storage mechanism.