With SBT and Scala installed, you have everything you need to run the examples. Sometimes, however, it is easier to play around and experiment with the examples directly from an IDE. The two most popular IDEs for working with Scala are IntelliJ IDEA and Eclipse. Both have great Scala plugins and excellent support for SBT.
IntelliJ provides a community and a commercial version of its IDE, both of which can be used to run and play around with the examples in this book. The following steps are shown for the community edition, but can be applied in the same manner for the commercial variant: