Java 27 New Features With Examples Java 27, released September 15, 2026, is the second non-LTS release after Java 25, shipping nine JEPs. Finalized features include G1 as the default garbage collector everywhere, Compact Object Headers by default, post-quantum TLS 1.3 key exchange, and JFR data redaction. Five more JEPs mature further preview and incubator rounds. In this article, we will walk through every Java 27 new feature with practical, runnable examples. You may also go through Java 26 New Features With Examples if you want the full picture of what changed just six months before this release. What Changed in Java 27? Java 27 keeps the six-month cadence going: Java 25 (LTS, September 2025), Java 26 (March 2026), and now Java 27 (September 2026).