Additional Notes
Non-Sealed Subclasses?
Track: Java
Topic: Language Upgrades
Focus: Sealed Classes
Java: Sealed Classes
Answer
'Non-sealed' allows further extension of a subclass.
The 'non-sealed' modifier in a subclass of a sealed class indicates that this subclass can be further extended. This is useful when you want to allow some flexibility in a part of your hierarchy while keeping the top-level control. For example, if `PayPal` is marked as non-sealed in a payment system, developers can add more specialized PayPal payment options.
The 'non-sealed' modifier in a subclass of a sealed class indicates that this subclass can be further extended. This is useful when you want to allow some flexibility in a part of your hierarchy while keeping the top-level control. For example, if `PayPal` is marked as non-sealed in a payment system, developers can add more specialized PayPal payment options.
Topics: Java Language Upgrades Sealed Classes