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SOLVED: Value not found in Scala program


I have just started with Scala so please forgive if this turns out to be silly.

I am trying to implement a linked list in Scala. So, I created a file that contains MyList class and others in MyList.scala:

abstract class MyList[+A] {
def head : A
def tail : MyList[A]
def isEmpty : Boolean
def add[B>:A](element: B) : MyList[B] = new MyNonEmptyList[B](element,this)

object MyEmptyList extends MyList[Nothing]{
override def head: Nothing = throw new NoSuchElementException("Head of an Empty list : ")

override def tail: MyList[Nothing] = throw new NoSuchElementException("Tail of an Empty list!" )

override def isEmpty: Boolean = true

override def toString : String = ""

case class MyNonEmptyList[A] (head: A, tail:MyList[A]) extends MyList[A]{
override def isEmpty: Boolean = false
override def toString : String = head + ", " + tail.toString

After carving out the basic functionalities, it was time to test it. So, I created a scala worksheet

object test{
val list = MyNonEmptyList(1,MyEmptyList)
val b = list.head

Now, when I try to run the code (on IntelliJ), I get the following error:

Error:(1, 18) not found: value MyNonEmptyList
lazy val list = MyNonEmptyList(1,MyEmptyList)

I do not get the reason behind this error. When I do ctrl+click, I am redirected to the source in MyList.scala file.

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SOLVED: Value not found in Scala program


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