This week’s Java roundup for April 14th, 2025 features news highlighting: the JDK 25 release schedule; the fourth milestone release of Spring Framework 7.0.0; the April 2025 edition of the Payara Platform; the release of JobRunr 7.5.0 and Jox 1.0.0; and Kroxylicious having joined the Commonhaus Foundation.
OpenJDK
Oracle has released versions 23.0.2, 21.0.6, 17.0.14, 11.0.26, and 8u441 of the JDK as part of the quarterly Critical Patch Update Advisory for April 2025. More details on this release may be found in the release notes for version 23.0.2, version 21.0.6, version 17.0.14, version 11.0.26 and version 8u441.
It was a busy week in the OpenJDK ecosystem during the week of April 14th, 2025, highlighting eight new JEPs having been elevated from their JEP Drafts to Candidate status. Four of these will be finalized after their respective rounds of preview. Further details may be found in this InfoQ news story.
JDK 25
Build 19 of the JDK 25 early-access builds was made available this past week featuring updates from Build 18 that include fixes for various issues. More details on this release may be found in the release notes.
After its review has concluded, Mark Reinhold, Chief Architect, Java Platform Group at Oracle, formally declared the release schedule for JDK 25 as follows:
- Rampdown Phase One (fork from main line): June 5, 2025
- Rampdown Phase Two: July 17, 2025
- Initial Release Candidate: August 7, 2025
- Final Release Candidate: August 21, 2025
- General Availability: September 16, 2025
For JDK 25, developers are encouraged to report bugs via the Java Bug Database.
BellSoft
Concurrent with Oracle’s Critical Patch Update (CPU) for April 2025, BellSoft has released CPU patches for versions 21.0.6.0.1, 17.0.14.0.1, 11.0.26.0.1, 8u451, 7u461 and 6u461 of Liberica JDK, their downstream distribution of OpenJDK, to address this list of CVEs. In addition, Patch Set Update (PSU) versions 24.0.1, 21.0.7, 17.0.15, 11.0.27 and 8u452, containing CPU and non-critical fixes, have also been released.
With an overall total of 740 fixes and backports, BellSoft states that they have participated in eliminating 38 issues in all releases.
Spring Framework
The fourth milestone release of Spring Framework 7.0.0 delivers improvements in documentation, dependency upgrades and new features such as: a new OptionalToObjectConverter class to automatically convert an Optional<T> to its contained object; and a new ClassFileMetadataReader class that supports JEP 484, Class-File API, for reading and writing classes as Java bytecode. Further details on this release may be found in the release notes.
The first release candidate of Spring for GraphQL 1.4.0 ships with improvements in documentation, dependency upgrades and new features such as: a new graphql.dataloader observation that measures data loading operations so that recorded traces are much more precise; and improvements to the server transports so that reactive data fetcher operations will be cancelled in-flight and further data fetching calls (blocking or reactive) will be avoided. More details on this release may be found in the release notes.
Payara
Payara has released their April 2025 edition of the Payara Platform that includes Community Edition 6.2025.4, Enterprise Edition 6.25.0 and Enterprise Edition 5.74.0. All three releases deliver dependency upgrades and new features: the ability to customize logs sent to the remote system log servers for more control over log management; and the addition of a new connection pool property to disable the verification of client information properties when pooling is set to false. Further details on these releases may be found in the release notes for Community Edition 6.2025.4 and Enterprise Edition 6.25.0 and Enterprise Edition 5.74.0.
Micronaut
The Micronaut Foundation has released version 4.8.2 of the Micronaut Framework featuring Micronaut Core 4.8.11, bug fixes and patch updates to modules: Micronaut Maven Plugin; Micronaut JSON Schema; Micronaut Micrometer; and Micronaut Servlet. More details on this release may be found in the release notes.
JobRunr
The release of JobRunr 7.5.0 features: support for Quarkus 3.20.0 and Micronaut 4.8.0; improved detection of misconfiguration between JobRequest and JobRequestHandler interfaces; and the ability to configure an instance of the InMemoryStorageProvider class using properties. There is a breaking change for developers who use Quarkus and Micronaut. The behavior to automatically fall back to the InMemoryStorageProvider class if no instance of the StorageProvider interface has been removed. Developers will need to explicitly configure this by setting the jobrunr.database.type property to mem or by providing a custom bean. Further details on this release may be found in the release notes.
Jox
The release of Jox 1.0.0, a virtual threads library that implements an efficient Channel data structure in Java designed to be used with virtual threads, features many dependency upgrades and notable changes: the removal of the collectAsView() method from the Source interface and the CollectSource class as this functionality is offered from the Flows class; and configuration of the newly integrated Renovate automated dependency update tool. More details on this release may be found in the release notes.
Micrometer
The first release candidate of Micrometer Metrics 1.15.0 provides bug fixes and new features such as: enhancements to the OtlpMetricsSender interface that provides an immutable Request inner class and a corresponding builder for convenience; and the addition of metrics for the newVirtualThreadPerTaskExecutor() method defined in the Java Executors class. Further details on this release may be found in the release notes.
The first release candidate of Micrometer Tracing 1.5.0 ships with a dependency upgrade to Micrometer Metrics 1.15.0-RC1 and a new feature that removes the dependency on the incubation of the OpenTelemetry Java Instrumentation API. (opentelemetry-instrumentation-api-incubator). More details on this release may be found in the release notes.
Project Reactor
The second milestone release of Project Reactor 2025.0.0 provides dependency upgrades to reactor-core 3.8.0-M2, reactor-netty 1.3.0-M2, reactor-pool 1.2.0-M2. There was also a realignment to version 2025.0.0-M2 with the reactor-addons 3.5.2, reactor-kotlin-extensions 1.2.3 and reactor-kafka 1.3.23 artifacts that remain unchanged. Further details on this release may be found in the release notes.
Similarly, Project Reactor 2024.0.5, the fifth maintenance release, provides dependency upgrades to reactor-core 3.7.5 and reactor-netty 1.2.5. There was also a realignment to version 2024.0.5 with the reactor-addons 3.5.2, reactor-pool 1.1.2, reactor-kotlin-extensions 1.2.3 and reactor-kafka 1.3.23 artifacts that remain unchanged. More details on this release may be found in the release notes.
Commonhaus Foundation
The Commonhaus Foundation, a non-profit organization dedicated to the sustainability of open source libraries and frameworks, has announced that Kroxylicious has joined the foundation this past week. Kroxylicious is an “early-stage project which seeks to lower the cost of developing Kafka proxies by providing a lot of the common requirements out-of-the-box.” This allows developers to focus on the required logic to get their proxies to perform their tasks.
