Cannot get scala file to run - scala

Question

I have 2 questions:
1) I'm trying to get the List menu in this program to appear either by calling scalac then scala or print it using the REPL but I'm a little confused because this uses packages. I tried to run this using
scalac Fruits.scala
scala bobsdelight\Fruits
but I get java.lang.NoClassDefFoundError: bobsdelights\Fruits wrong name: bobsdelights/Fruits)
If someone can please show me how to execute this script that would be great
2)I'm also trying to create a new Apple object by calling new Fruits.Apple in the REPL by loading the file first but I get:
error: type Apple is not a member of object Fruits
new Fruits.Apple``
This example is in the Programming In Scala book.
package bobsdelights
abstract class Fruit(
val name: String,
val color: String
)
object Fruits {
object Apple extends Fruit("apple", "red")
object Orange extends Fruit("orange", "orange")
object Pear extends Fruit("pear", "yellowish")
val menu = List(Apple, Orange, Pear)
}

Answer 1

REPL example:
$ scala
Welcome to Scala 2.12.0 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_111).
Type in expressions for evaluation. Or try :help.
scala> :pa bobsdelight.scala
Pasting file bobsdelight.scala...
scala> Fruits.menu
<console>:12: error: not found: value Fruits
Fruits.menu
^
scala> import bobsdelight._
<console>:11: error: not found: value bobsdelight
import bobsdelight._
^
scala> import bobsdelights._
import bobsdelights._
scala> Fruits.menu
res1: List[bobsdelights.Fruit] = List(bobsdelights.Fruits$Apple$#6c17c0f8, bobsdelights.Fruits$Orange$#260e3837, bobsdelights.Fruits$Pear$#88b76f2)
If you try to "run" a class with no main method:
$ scala bobsdelights.Fruits
java.lang.NoSuchMethodException: bobsdelights.Fruits.main([Ljava.lang.String;)
Idiom for runnable app:
object Fruits extends App {
object Apple extends Fruit("apple", "red")
object Orange extends Fruit("orange", "orange")
object Pear extends Fruit("pear", "yellowish")
val menu = List(Apple, Orange, Pear)
println(menu)
}
and
$ scalac bobsdelight.scala && scala bobsdelights.Fruits
List(bobsdelights.Fruits$Apple$#4f8e5cde, bobsdelights.Fruits$Orange$#504bae78, bobsdelights.Fruits$Pear$#3b764bce)