class Complex(real: Double, imaginary: Double) //scala classes can have parameters unlike Java
{
  def re() = real
  def im() = imaginary
}

class ComplexTwo(real: Double, imaginary: Double)
{
  def re = real //method without argument. Different from methods with 0 arguments.
  def im = imaginary // methods with 0 arguments have brackets
}

class ComplexThree(real: Double, imaginary: Double)
{
  def re = real
  def im = imaginary
  override def toString() =
    "" + re + (if (im < 0) "" else "+") + im + "i"
}
object ComplexClass {
  def main(args: Array[String]) {
    val c = new Complex(1.2, 3.4)
    println("imaginary part: " + c.im())

    val c2 = new Complex(3.0, 1.14)
    println("imaginary part using methods without arguments : " + c2.im)
  }
}