The release of Java SE 15 in Sept 2020 will introduce ... subtypes in the generated documentation page for a sealed class.) A hierarchy like Shape gives its clients a choice: they can deal ...

Sealed classes, proposed in JEP 409 and available since Java 17, let developers limit and control how deeply a component's type hierarchy can extend. With sealed classes, a developer can essentially ...

Developers who are new to Java can sometimes have trouble with class and package naming. In fact, the introductory Java forums are filled with threads starting with questions about these areas of ...