https://www.scala-lang.org/

• REPL problem
  • It is very important to have the same versions of language and its libraries.
    • Make sure that the same versions are used.
      • Use VM parameter to see which libs are loaded during starting of REPL: -verbose:class
      • To set SDK/libraries:
        • https://stackoverflow.com/questions/24019834/error-scala-no-scala-library-jar-in-scala-compiler-library
      • It worked when I set the “scala-sdk-2.12.4” as SDK for my IntelliJ project “scalatest”

• pom.xml example for mixed Java and Scala projects