nie wiem o co chodzi

class Time(private[this] var h:Int){
  if(h < 0) h = 0

  def hour:Int = h
  def hour_=(h:Int) {
    if(h < 0) this.h = 0
    else
    this.h = h
  }
}

object Time{
  def apply(h:Int) = new Time(h)
}

var t = Time(-61)
t.hour

interpreter pokzuje:
defined class Time
defined object Time
t: Time = Time@1579eec9
res61: Int = -61 <- czemu to nie jest 0 !?