how to import a class in scala - scala

Question

I am learning scala recently, the package in scala confused me.
I have a file named StockPriceFinder.scala:
// StockPriceFinder.scala
object StockPriceFinder {
def getTickersAndUnits() = {
val stockAndUnitsXML = scala.xml.XML.load("stocks.xml")
(Map[String, Int]() /: (stocksAndUnitsXML \ "symbol")) {
(map, symbolNode) =>
val ticker = (symbolNode \ "#ticker").toString
val units = (symbolNode \ "units").text.toInt
map ++ Map(ticker -> units)
}
}
}
then I want to use StockPriceFinder in test.scala which is in the same folder:
val symbolAndUnits = StockPriceFinder.getTickersAndUnits
but when I run it with scala test.scala, I got error:error: not found: value StockPriceFinder. In Java, if this two source files are in the same folder, I do not need to import and I can use it directly, so how can I import StockPriceFinder correctly in scala?
I have tried to use import StockPriceFinder in test.scala, but it still does not work.

Answer 1

You don't need to import StockPriceFinder if the files are in the same package (not folder).
But you do need to compile StockPriceFinder.scala first and pass the correct classpath to scala.
scalac StockPriceFinder.scala
scala -cp . test.scala
should work (might be a bit off). However, you shouldn't do it manually, since it becomes unmanageable very quickly; use SBT or other build tools (Maven, Gradle).