Java 27 Tightens Defaults and Prepares for Quantum Threats
Java 27 makes compact object headers and G1 GC the new defaults, adds post-quantum TLS protection, and redacts sensitive data in JFR recordings. Previews for structured concurrency and pattern matching advance while the platform prepares for Valhalla. The September release emphasizes practical gains over flashy changes.
By emma rogers· 7/11/2026, 12:42:08 AM· 2 min read
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Read original story →#jdk 27#g1 garbage collector#jep 523#java 27#structured concurrency#compact object headers#jep 534#top news#post-quantum tls
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