🌟JDK 28 Early-Access Builds Feature ZGC Improvements
ZGC gets faster startup and bigger heap sizing
TL;DR
JDK 28 early-access builds now include ZGC enhancements like faster startup and adaptive heap sizing. Developers can test these features and report bugs.
JDK 28 early-access builds are out, featuring ZGC improvements like faster startup and warmup (JEP 545) and adaptive heap sizing (JEP 546). These changes can significantly boost performance for large-scale Java applications. The builds also include Structured Concurrency (JEP 543) and Lazy Constants (JEP 547), enhancing concurrency and code efficiency. Developers should test these features in their projects and report any issues via the Java Bug Database.
Key Points
JEP 546: Adaptive Heap Sizing for ZGC, now Target for JDK 28, expected to conclude review on Oct 14, 2026
JEP 545: Faster Startup and Warmup with ZGC, also Target for JDK 28, review concludes Oct 14, 2026
JEP 543: Structured Concurrency, now Target for JDK 28, review concludes Oct 13, 2026
JEP 547: Lazy Constants, elevated from JEP Draft to Candidate status
JDK 28 Build 19 available, featuring fixes from Build 18
Why It Matters
If you're running Java apps with large heaps or need faster startup times, the ZGC improvements in JDK 28 early-access builds can make a big difference. Test these features now to see if they fit your project's needs.
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