Can You Extend Java Enums to Add More Elements?

Extending Enums for Additional Elements: A Java Incompatibility

While enums serve as convenient collections of named constants, the question arises: "Is it possible to modify an existing enum by appending new elements?"

The proposed solution involves introducing a subclass, as exemplified below:

enum A {a, b, c}
enum B extends A {d}

However, this approach is not viable in Java. Extending an enum in such a manner would lead to inconsistencies, with values defined in the subclass not being visible to those who only know about the base enum.

Instead, consider exploring alternative approaches that align with the intended usage of the enum. By providing more information about the desired functionality, we can potentially suggest suitable solutions.

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