ANSWER:

The “Program Files” folder is not writeable for a standard user (and for a good reason). Do not store any userdata there.

You need to put the database files into a different folder. This is what e.g. %APPDATA% is intended to be in Windows.

You can obtain the value of the %APPDATA% environment variable using the System.getenv() method.

From within Java you can also put it into a sub-directory the user.home directory (System.getProperty("user.home")).

a_horse_with_no_name from http://stackoverflow.com/questions/16387064