UML Code (PlantUML)

@startuml
Product <|-- ConcreteProduct
Creator <|-- ConcreteCreator
ConcreteCreator ..> ConcreteProduct

class Creator {
  {abstract} fabricmethod()
  oneOperation()
}

class ConcreteCreator {
  fabricmethod()
}
@enduml

• No new operator is called by calling classes → better to exchange implementation later
• Better name for virtual constructor

• Creation of sub classes
• Add. class which contains class method for creation necessary