How can I import Scala code to Eclipse?

Add sbteclipse to your plugin definition file. For sbt version 0.13 and up, add the following to ~/.sbt/0.13/plugins/plugins.sbt.

addSbtPlugin("com.typesafe.sbteclipse" % "sbteclipse-plugin" % "2.5.0")

References

• https://github.com/typesafehub/sbteclipse