It's entirely possible I've misplaced half my brain today, so bear with me.
It looks to me like you're using an enum as an object / class. My (perhaps limited) understanding of the reasons for and uses of enums were limited to a list (enumeration) of related bits of information.
private enum Connection
int port = 80;
int ssl = 443;
String domain = "codestore.net";
String uri = "";
Thus providing a convenient container and nothing more. So it's interesting to me that your enum has methods. I suppose there's nothing saying they can't but it seems then an odd choice of pattern over use of a class.