class Constants {
  final val UnitConstant = ()
  final val ByteConstant = false
  final val CharConstant = 'a'
  final val ShortConstant = 1.toShort
  final val IntConstant = 1
  final val LongConstant = 1L
  final val FloatConstant = 1f
  final val DoubleConstant = 1d

  final val NullConstant = null

  final val ClassConstant = classOf[String]
  final val ClassConstant2 = classOf[Some[_]]
  final val EnumConstant = java.util.concurrent.TimeUnit.DAYS
  final val StringConstant = classOf[String]
}
