I keep dying on Minecraft when I respawn?

Just recently I was playing minecraft and I have 2 hearts left, but when i die i reload the world but because of autosave it spawned me above the block and i keep falling to my death how to fix?

How come i don't have rabbits in minecraft?

I updated minecraft to 1,8 version but when i played my older worlds there were no rabbits, andestite, granite… I can only craft new stuff but i can't find rabbits and ocean monumentals… I really want other types of stones because digging so much quartz and crafting it will be a waste of time.

Make a copy of a creative defualt map in minecraft?

So i have made a rally nice mechanism in minecraft creative mode default. I tried to make a copy of it to try the mechanism out without destroying the original one (cuz at the end all the things explode) but the structure i built wasn't there!

How to get minecraft to recognize my texture pack?

How do I get minecraft to recognize my texture pack?

Added (1). I unzipped someone else's custom pack, edited the files I wanted to edit, saved it in a new zip file with the exact same format and folders inside. I didn't leave out any files that were in the previous one. I gave it a new name and put it in the resources folder with the other texture pack (the original one).

But mine doesn't show up on the list in minecraft, so I can't use it or see what it looks like.

Added (2). It's PC minecraft, if that wasn't obvious.

Can 3D games be coded with Java?

Can 3D games be coded with Java?

Added (1). I just realized that games such as Skyrim and Halo were coded with C++. I know Java is used for making games, can it be used to make games that advanced?