Oracle releases Java 27 with post-quantum cryptography focus

Oracle has released Java 27, the second non-long-term support (LTS) version since JDK 25. The release focuses heavily on security enhancements, specifically the implementation of post-quantum cryptography (PQC). Key features include JEP 527, which introduces post-quantum hybrid key exchange for TLS 1.3, and ongoing work on PQC algorithms to help enterprises mitigate future quantum computing threats.

Other technical updates in Java 27 include setting G1 as the default garbage collector (JEP 523), improvements to compact object headers, and the introduction of PEM encoding for cryptographic objects (JEP 538). The release also includes updates to the Java Verified Portfolio ecosystem, including Helidon 27, JavaFX 27—which features a Metal rendering pipeline for macOS—and Oracle Jipher 20, a provider supporting FIPS 140-3 security requirements.

As the Java ecosystem evolves, the transition from previous LTS versions like Java 21 toward newer iterations like Java 25 and beyond aims to improve application efficiency, developer productivity, and adaptability to modern cloud computing environments.