The Java roundup for May 5th, 2025 highlights significant progress towards JDK 25, featuring notable JEPs both proposed and elevated to target status. JEP 513 (Flexible Constructor Bodies) and JEP 505 (Structured Concurrency, Fifth Preview) have moved up the ranks. Additionally, stability improvements for JDK Flight Recorder are proposed in JEP 518, while JEP 516 focuses on enhancing object caching across garbage collectors. With Rampdown Phase One approaching, there are nine JEPs included in JDK 25's feature set, marking an important phase for developers.
Two JEPs have been elevated from Proposed to Target for JDK 25, namely: JEP 513, Flexible Constructor Bodies, and JEP 505, Structured Concurrency (Fifth Preview), announced here and here.
JEP 518, JFR Cooperative Sampling, has been elevated to Candidate status. This JEP proposes to improve the stability of the JDK Flight Recorder when it asynchronously samples Java thread stacks.
JEP 516, Ahead-of-Time Object Caching with Any GC, has been elevated to Candidate status, proposing enhancements for improved startup and warmup time with any garbage collector.
With less than a month before the scheduled Rampdown Phase One, there are nine JEPs that are part of the feature set for JDK 25.
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