Introduction to Sealed Classes

Swathi Prasad
2 min readJan 8, 2022

Learn about fine-grained inheritance control in Java

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Sealed classes feature was released in Java 17. However it was already available as a preview feature since Java 15 and revised in Java 16.

Sealed classes can restrict other classes or interfaces from extending or implementing them. In short, this feature allows the author to have a control which code is responsible for implementing…

Swathi Prasad

Software architect and developer living in Germany. Sharing my opinion and what I learn.