During the last week I took part in a course delivered by Mike Morris who came to Israel specifically for the purpose of delivering this course. Mike Morris was a very kind lecturer and even though the course was delivered in English the material was very clear and the training was highly effective. You can find a copy of my diploma on line.

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.