Dart is Google’s new class based programming language. Code written in Dart can be compiled into Java Script. We can use Dart both for server side and client side (web browsers).

Stable Values in Java (JEP 502): Deferred Immutability with JVM Trust
Explore Stable Values – a new Java 25 upcoming feature (JEP 502) enabling lazy initialization with immutable performance and JVM-level optimizations.