如何在Scala中不使用早期初始化器为超类构造函数创建参数

class SuperClass(param1: String = "default1", param2: Int = 0) {
  // ...
}

class SubClass extends SuperClass() {
  // 子类可以选择不传递参数，使用默认值
}

class SuperClass(param1: String, param2: Int) {
  // ...
}

class SubClass extends SuperClass {
  def this() = {
    this("default1", 0)
  }
}

class SuperClass(param1: String, param2: Int) {
  // ...
}

object SubClass {
  def create(): SubClass = new SubClass("default1", 0)
}

class SubClass(param1: String, param2: Int) extends SuperClass(param1, param2)

class SuperClass(param1: String, param2: Int) {
  // ...
}

class SubClass extends SuperClass {
  private lazy val param1: String = "default1"
  private lazy val param2: Int = 0

  def this() = {
    this(param1, param2)
  }
}