None.hash code was changed by java.reflection

NoneReflection.scala

object TestNone {
  def main(args: Array[String]) {
    //first none
    val none1 = None

    //create by reflection
    val constructor = classOf[None$].getDeclaredConstructor();
    constructor.setAccessible(true);
    val none2 = constructor.newInstance()

    //new none
    val none3 = None

    printf("None is None?%s", none1 == none3) //None is None?false
  }
}