Tata Consultancy Services
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Question d’entretien chez Tata Consultancy Services
Explain the difference between an interface and an abstract class in Java and when you would use each one.
Réponse à la question d'entretien
Utilisateur anonyme
5 mars 2026
I explained that an interface defines a contract that a class must implement, while an abstract class can contain both abstract and concrete methods. I also mentioned that a class can implement multiple interfaces but can only extend one abstract class.