This week's Java roundup for December 20th, 2021, features news from OpenJDK with a new draft on value objects, JDK 18, JDK 19, Project Loom, additional statements from vendors on Log4Shell ...

An OpenJDK proposal would preview value classes and objects in a forthcoming version of Java. The feature would provide Java class instances that have only final fields and lack object identity.

Valhalla introduces value objects to improve performance through flatter data representations. The project will expand Java possibilities and preserve performance gains through generic APIs.