Scala example source code file (t3719.scala)

This example Scala source code file (t3719.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

app, day, day, dayvalue, dayvalue, fri, mon, sat, string, string, sun, tue, tue, val

The Scala t3719.scala source code

object Days extends Enumeration {
  type Day = DayValue
  val Mon, Tue, Wed, Thu, Fri, Sat, Sun = new DayValue // DayValue
    
  protected class DayValue extends Val {
    def isWeekday: Boolean =
      this match {
        case Sun => false
        case Sat => false
        case _ => true
      }
  }
}

object Test extends App {
  def dayElementsShouldBeNamed(): List[String] =
    Days.values.toList.sorted.map(x => x.toString)

  def nameOfMon(): String =  {
    import Days._
    val d: Day = Mon
    d.toString
  }
    
  def nameOfTue(): String =  {
    import Days._
    val d: Day = Tue
    d.toString
  }

  println(dayElementsShouldBeNamed())
  println(nameOfMon())
  println(nameOfTue())
  println(nameOfMon())
}