Summary:
- This article discusses a proposed change to the Java Development Kit (JDK) that would introduce a new feature called "Sealed Classes".
- Sealed Classes are a way to restrict the set of possible subclasses of a class, allowing developers to have more control over the class hierarchy and prevent unintended extensions.
- The article outlines the motivation and design of the Sealed Classes feature, which aims to improve the maintainability and type safety of Java code.