I believe you can program xbox games with c#. But no idea for any nintendo systems. Try a google search (I just now came across http://bobrost.com/nes/ that looks promising at a quick glance).

I'm not sure how you would make a game for nes/snes, you can definitely try to make a rom for emulators (or make a nes/snes style game), but to actually make the game in a cartridge is harder. I don't even know how you would do that, but I'm pretty sure it doesn't work for java (considering NES/SNES were made before java was). I've also heard google has a translator for programming languages that will change your code from one language to another (https://developers.google.com/translate/) but it costs money. If you want to make something for tablets, that will have to either be in eclipse or something else (like the adaption). Then that's only for android/java-based tablets and phones, since iPods and iPhones don't use java.

Thanks! (and I meant just about any system) And I didn't expect that it would always be in java.

Also, the brand new Ouya console (http://www.ouya.tv/) is android based. I'm not sure exactly if it can do java (I'd expect that it would because it's android) and it can also support Unity. Also, every Ouya console comes with the tools to develop games on it. So if you want to make console games (with the console at a cheap price of $99), the Ouya would be your choice. I'm going to be getting one shortly (not exactly sure when, was supposed to get it last month...) and if I get the time this summer, I'll try making some games on it.

Yah, it looks like a good console, the only problem is that the people who made it are having a hard time shipping it to the over 50k people who have supported the kickstarter/pre-ordered/ordered it. I heard someone who was #7 on the list hasn't gotten there's yet, while some who bought it a few weeks before it came out got them right away, so it's unpredictable when you might get one.