iterator.md

Iterator

UsedCarDealer exposes a CarIterator so client code can traverse cars without depending on the dealer's internal collection.

classDiagram
direction LR
class UsedCarDealerAggregate {
  <<interface>>
  +createIterator() CarIterator
}
class UsedCarDealer
class CarIterator {
  <<interface>>
  +hasNext() boolean
  +next() Car
}
class UsedCarDealerIterator
class Car
class Main
UsedCarDealerAggregate <|.. UsedCarDealer
CarIterator <|.. UsedCarDealerIterator
UsedCarDealer o-- Car : inventory
UsedCarDealer --> UsedCarDealerIterator : creates
UsedCarDealerIterator --> Car : returns current
Main --> CarIterator : traverses

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