scala多态

class point(var x:Int,var y:Int){
  def print():Unit={
    println(s"x=${x},y=${y}")

  }
}

class LabelPoint(x:Int,y:Int,var label:String)extends point(x,y){
  override def print():Unit={
    println(s"x=${x},y=${y},label=${label}")
  }
}

object Test1 {
  def main(args: Array[String]): Unit = {
    var p1=new point(1,2)
    p1.print()

    var labelP1=new LabelPoint(1,2,"小王")
    labelP1.print()
  }

}