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Java 26's Lazy Constants: The Thread-Safe Singleton Killer We've Waited For

Ever stared at double-checked locking and wondered if Java devs secretly hate themselves? JEP 526's LazyConstant says: no more.

DevTools Feed Apr 03, 2026 3 min read
Java 26 LazyConstant code example replacing double-checked locking

⚡ Key Takeaways

  • LazyConstant kills double-checked locking with native, simple API.
  • Thread-safe lazy init for expensive objects like HTTP clients.
  • Preview feature: use --enable-preview; not Serializable yet.
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#Concurrency #JEP 526 #Java 26 #LazyConstant

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Originally reported by dev.to

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