Fields and Methods

class Counter(start: Int) {
  var value = start

  def add(step: Int): Int = {
    value = value + step
    value
  }

  override def toString: String = "[counter]"
}

object Main {
  def main(args: Array[String]): Unit = {
    val start = 13
    val counter = new Counter(start)
    val after = counter.add(2)

    println("start=" + start)
    println("after=" + after)
    println("current=" + counter.value)
  }
}

class Counter(start: Int) {
  var value = start

  def add(step: Int): Int = {
    value = value + step
    value
  }

  override def toString: String = "[counter]"
}

object Main {
  def main(args: Array[String]): Unit = {
    val start = 13
    val counter = new Counter(start)
    val after = counter.add(2)

    println("start=" + start)
    println("after=" + after)
    println("current=" + counter.value)
  }
}