TutorialJava
JDK 27 Is Here: What You Get Just by Upgrading (and What Needs --enable-preview)
JDK 27 went GA on 15 September 2026 with 9 JEPs. G1 everywhere, compact object headers, post-quantum TLS and JFR redaction change behaviour with zero code changes; lazy constants, primitive patterns, structured concurrency and the PEM API are previews. What each one means, with working Java examples.
Chaturmind TeamSep 29, 2026
