import scala.beans.BeanProperty

object work04 {

  def main(args: Array[String]): Unit = {

    val area1=new TestCylinder

    var area2=new area1.Cylinder

     var areanum:Double=area2.findArea(5.0)

    println(areanum)

    var volumenum:Double=area2.findVolume(2)

    println(volumenum)

  }

}

class TestCylinder{

  class Cylinder{

    @BeanProperty var radius:Double=1

    def findArea(radius:Double):Double={

      var area:Double=0

      area=radius*radius*3.14

      area

    }

    @BeanProperty var length:Double=1

    def findVolume(length:Double):Double={

      var volume:Double=0

      volume=findArea(radius)*length

      volume

    }

  }

}