So, I've been learning a little java and C++ here and there...
however, I want to start focusing on one and get extremely good at it.
I was just wondering which code would be more beneficial to learn in the business world?
Java or C++?
Also, i'm an economic major in college, and just doing this as a hobby. Please, your insight will be greatly appreciated.

Both are as beneficial actually. Some years ago - not so much. Java has become very famous since smartphones came onto the market.

eh Java, i thought C/C++ were good for apple products?

Personally I would stick to java. I would guess most internal apps are written in java because you can write them faster than in C++ and they're more portable. Businesses are usually trying to get something done as soon as possible and they don't care if it's a bit slower than optimal. usually you only use c/c++ if you need high performance or you're doing it on special hardware (like your drivers).

For hobby coding, definitely go with Java.

cobol

if you're just doing this as a hobby I wouldn't recommend either
they're both enterprise shit with tons of boilerplate and very much un-fun

that's true too. i was tempted to say "just go with python."

You said you were doing it kind of as a hobby, but also that you wanted one that was relevant to the business world - this seems kind of a contradiction.

If you want it for business relevance, I'd go Java. C++ is still used, mostly for really low-level programming (embedded systems and such) but I think Java is really on top here.

If you want it for a hobby, Java is still ok. I program a lot of hobby projects in Java, but that's just because I know it inside and out, much more than any other language. But really, some other language might be better. Python and Ruby come to mind as good starter languages.