REPL loop in Scala

gistfile1.txt

import scala.tools.nsc.Settings
import scala.tools.nsc.interpreter.ILoop

object TestConsole extends App {
  val settings = new Settings
  settings.usejavacp.value = true
  settings.deprecation.value = true

  new SampleILoop().process(settings)
}

class SampleILoop extends ILoop {
  override def prompt = "==> "

  addThunk {
    intp.beQuietDuring {
      intp.addImports("java.lang.Math._")
    }
  }

  override def printWelcome() {
    echo("\n" + " Wellcome to a simple REPL ")
  }

}