Set any private field on any Scala or Java class

reflect.scala

object Reflect {

  implicit class Reflect(ref: AnyRef) {
    /**
      * Set the value of a (private) field.
      */
    def setV(name: String, value: Any): Unit = {
      val declaredField = ref.getClass.getDeclaredField(name)
      declaredField.setAccessible(true)
      declaredField.set(ref, value)
    }
  }

}