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Jun 1, 2026 · Fundamentals

JDK 27 Trims Two API Methods: Introducing JEP 531 and Set.ofLazy()

JDK 27’s third preview (JEP 531) removes the isInitialized() and orElse() methods from the LazyConstant API, adds a Set.ofLazy() factory method, and refines the lazy‑constant design to improve composability, startup performance, thread safety, and JVM optimizations.