<ul><li>Sealed classes in Java provide explicit control over which classes can extend or implement a class/interface.</li><li>They were introduced in Java 15 (preview) and finalized in Java 17, enforcing restricted inheritance and strong encapsulation.</li><li>Sealed classes restrict which other classes or interfaces may extend or implement them, promoting controlled inheritance in the class hierarchy.</li><li>For example, in a sealed class Shape, only Circle and Rectangle are allowed to extend it.</li></ul>

Sealed Classes in Java: Deep Dive with Interview Questions

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