Calc.scala

Cala.scala

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

    val two = Calc.add(1,1)
    val one = Calc.sub(2,1)
    val six = Calc.mul(3,2)
    val five = Calc.div(10,2)
    val err = try{
      Calc.div(10,0)
    }
    catch{
      case _:java.lang.IllegalArgumentException => {
        println("IllegalArgumentException")
        new IllegalArgumentException
      }
    }
    finally{
      println("always called")
    }


    println("two = " + two)
    println("one = " + one)
    println("six = " + six)
    println("five = " + five)
    println("err = " +  err)

  }
  def add(num1 : Int, num2 : Int) = num1 + num2
  def sub(num1 : Int, num2 : Int) = num1 - num2
  def mul(num1 : Int, num2 : Int) = num1 * num2
  def div(num1 : Float, num2 : Float) =  {
    import java.lang.IllegalArgumentException
    if(num2 == 0)
      throw new IllegalArgumentException("devide by zero")
    else
      num1 / num2
  }
}