Additional Notes
Sealed Interfaces in Java?
Track: Java
Topic: Language Upgrades
Focus: Sealed Classes
Java: Sealed Classes
Answer
Sealed interfaces restrict which classes can implement them.
Sealed interfaces control which classes can implement the interface, similar to sealed classes. This is useful in defining a domain where only specific implementations are allowed. For example, in an e-commerce platform, a sealed interface `PaymentMethod` could restrict implementations to `CreditCard` and `PayPal`, ensuring only authorized payment methods are available.
Sealed interfaces control which classes can implement the interface, similar to sealed classes. This is useful in defining a domain where only specific implementations are allowed. For example, in an e-commerce platform, a sealed interface `PaymentMethod` could restrict implementations to `CreditCard` and `PayPal`, ensuring only authorized payment methods are available.
Topics: Java Language Upgrades Sealed Classes