some examples

test.scala

class Foo(message: String) {
  def print_msg() = {
    println(message)
  }
}

object Foo {
  def apply(message: String) = {
    println("Foo.apply: " + message)
    new Foo(message)
  }
}

object Bar {
  def apply(message: String) = {
    println("Bar.apply: " + message)
    new Foo(message)
  }
}


object Ap extends App{
  val f1: Foo = new Foo("Messag001")
  f1.print_msg() // Messge001

  val hoge: Foo = Foo {
    "Hoge Hoge"
  } // Foo.apply: Hoge Hoge
  hoge.print_msg() // Hoge Hoge

  def x() = Bar {
    "Hello, Apply"
  }
  val v = x()
  v.print_msg()

  def y = Bar {
    "Hello, Apply2"
  }
  y.print_msg()
  y

  val z = () => println("Hi! John")
  z()

}