Running a Java program as a OS?

Like a arcade machine, example as soon as it boots minecraft starts or MPickWare starts.

Is this possible? If so how?

Can I learn programming through modding minecraft?

Hello i'm 12 turning 13, I really want to be a game designer, I have ordered books from homeschoolprogramming, but I keep forgetting to do them and it's not just not learning it, I found a site called http://www.youthdigital.com, it says you can learn java through modding minecraft, I would love to learn programming while having fun at the same time, but the thing is, is it good? Can anyone here tell me a review? Thanks. Also some extra details, my brother was being a **** head and saying I will never be able to game design because only genius people can, is that true, i'm not the smartest person.

How to make my minecraft play much smoother?

I have a windows 7 home premium.
My system:
Model: HP pavilion dm4 notebook PC
Rating: 4.3 Windows Experience Index
Processor: Intel(R) Core(TM) i5 CPU 2.53GHz
Installed Memory (RAM): 4.00 GB (3.80 GB usable)
System type: 64-bit Operating System

Is there something more i need or to add on my computer to improve its speed for the game?

Looking for a gaming pc/laptop under $500?

I need a computer that can run recording software, skype, and games like minecraft with modpacks, and common steam games like day Z, GMOD, and rust, at the same time.
A desktop is preferable but a laptop will suffice for the time being. Once again this must be around the $500 mark.

Fast, cheap, good gaming towers?

I need a computer tower that can run Minecraft at at least 150 FPS. I also want it cheap, under or around $500. The Graphics card isn't the most important to me, but if there's one with a good graphics card, Ill go for it!