Value objects would be distinguished only by their field values, not by identity, providing an easier programming model for simple values.

JavaWorld is a leading resource for Java developers, offering articles, tutorials, and insights on Java programming, enterprise Java development, and Java ecosystem tools and technologies. With contributions from industry experts and experienced developers, JavaWorld covers a wide range of topics, including Java language features, JVM internals, and application architecture. Developers can stay informed about the latest advancements in the Java platform, learn about emerging trends such as microservices and cloud-native development, and leverage expert advice to enhance their Java skills.

Java World

An OpenJDK proposal is set to introduce value classes and objects to Java, allowing for class instances with only final fields and no object identity. This would enable objects to be differentiated by their field values, improve memory footprint, locality, and garbage collection efficiency. The proposal, updated in June 2022, does not yet specify a target version for Java and will not introduce a struct feature or change the treatment of primitive types.

OpenJDK proposal would bring value classes and objects to Java