Oracle’s release of Java 23 introduces a suite of preview JEPs—including primitive pattern matching, module import declarations, flexible constructors, and new library APIs—while also previewing performance, tooling, and management enhancements, and it hints at upcoming features slated for Java 24.
The article outlines the twelve preview features introduced in JDK 23, from primitive pattern matching to structured concurrency, and argues that mastering timeless programming principles from Effective Java can help developers adapt to such language evolutions.
JDK 23, the next non‑LTS release of the Java platform slated for September 17, introduces a suite of preview features—including scoped values, structured concurrency, flexible constructor bodies, implicit class and instance methods, module import declarations, Markdown Javadoc, vector API enhancements, and a default generational ZGC mode—while deprecating sun.misc.Unsafe memory‑access methods.
