1. Install JDK8 on CentOS - follow [this post](http://www.if-not-true-then-false.com/2014/install-oracle-java-8-on-fedora-centos-rhel/)
2. Download Scala from [Scala-lang.org](http://www.scala-lang.org/download/), and run the following commands
tar xvf scala-2.11.5.tgz
sudo mv ~/Downloads/scala-2.11.5 /usr/scala/
sudo ln -s /usr/scala/scala-2.11.5 /usr/scala/latest
sudo alternatives --install /usr/bin/scala scala /usr/scala/latest/bin/scala 100
sudo alternatives --install /usr/bin/scalac scalac /usr/scala/latest/bin/scalac 100
sudo alternatives --install /usr/bin/scalap scalap /usr/scala/latest/bin/scalap 100