Question d’entretien chez Deloitte
Explain the difference between HashMap and ConcurrentHashMap.
Réponse à la question d'entretien
Utilisateur anonyme
6 juill. 2026
I explained that HashMap is not thread-safe and is suitable for single-threaded environments, whereas ConcurrentHashMap is thread-safe and designed for concurrent access using internal locking mechanisms, providing better performance than synchronizing an entire map.