Java Sealed Classes

Java Sealed Classes:

Java Sealed classes are a new feature introduced in Java 15. Sealed classes are used to restrict the number of classes that can inherit from a given class. In other words, a sealed class specifies the classes that can extend or implement it, and any other classes are not allowed to do so.

To define a sealed class, you use the "sealed" keyword before the "class" keyword.

The "permits" keyword is used to list the classes that are allowed to extend the sealed class.

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