You buy it.
there is no viruses on minecraft just lag and pixelmon has none to
No
no
No
No, there are not.
If you download minecraft from minecraft.net, or the homepage, you will not get viruses. Downloaded from anywhere else, or any *sales advertisements* (ex. Minecraft for only 10$) you may get a virus. Minecraft is safe, but the things you download for it or off of it may give you a virus.
I cannot speak about all the maps, because I have not downloaded them all but you can't tell if it does if your only criteria is "a minecraft map." however, actual, normal minecraft maps do not contain any viruses. If you want, you can scan it for viruses with some software
Almost certainly no.
no but you need java
No, many people are using minecraft without any problems with viruses.
Cracked versions can give you viruses depending on what website you use.
No, it's official!