The Float and Double classes extend Ellipse2D, ... For example, the Matcher class, in java.util.regex, provides a results() method that returns a stream of match results.

Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs.

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 ...