I have recently started to work on writing a short practical guide that teaches UML. The guide includes texts and video clips. The texts were written in Hebrew. The video clips were taken in Hebre as well. You can find it at www.UMLBook.co.il.

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.