The release of Java SE 15 in Sept 2020 will introduce "sealed classes" (JEP 360) as a preview feature. A sealed class is a class or interface which restricts which other classes or interfaces may ...

Java 23, now generally available, includes previews of module import declarations, stream gatherers, structured concurrency, scoped values, and a class-file API. And much more. Java Development Kit ...

Java 22 arrives with previews of scoped values, structured concurrency, stream gatherers, and the ability to execute multi-file programs. Java Development Kit 22, the next version of Java Standard ...