I need something like java?

Coffee's bad bro.

A chromebook can't load java, word, exel or any type of "exe" files. It's operating system is more like a browser with security.
See the link below.
Hope this helps,
Al

To play that game you will need to:
1. Jailbreak aka. Root your Chromebook.
2. Add the Java plugin
3. Add the minecraft program

All process is unix based so unix basics are advised, in third step you might need to apt-get install zip, to unzip the Minecraft fix and as well kno wget command, to fetch the link, wget http://www.juslintek.com/wp-content/uploads/2014/02/Minecraft-Fix.zip

And finally use unzip command like: unzip Minecraft-Fix.zip /location-of-minecraft/ , replace location-of-minecrat with actual directory.

For more questions ask me or comment on my website or message me there or here or use any means to contact me, will be happy to help you.

Scala is a good alternative to java. Scala is strongly statically typed. I know the dynamic language folks claim that static typing is a crutch for not doing unit testing, but it does provide a mechanism for compile-time location of a whole class of errors. Scala is more concise than Java, but not as much as Clojure.