Simple Scala Student class

student.scala

case class Student (fn: String, ln: String) {
	def name() = s"$fn $ln"
	def greet() = s"Hello, $name"
}

val s = Student("John", "Doe")
val l = List(s,s,s)
val res = l.map{_.name.length}.sum

you could even omit the () in def name() to become def name = ...

I would write Seq instead of List.