Java turned 30 in 2025. Thirty years, mate. That's older than some of the devs writing it. According to industry data, 99% of organizations still actively use Java. Over 90% of Fortune 500 companies depend on it for their core systems. Kotlin's been on a tear. JetBrains reports 2.5 million developers now use it worldwide. With a 30% growth rate, it's not slowing down.
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This week's Java roundup for December 22nd, 2025, features news highlighting: new interfaces, VaultClient and ReactiveVaultClient, in Spring Vault; point releases for LangChain4j and Seed4J; maintenance releases for Micronaut, Quarkus and Infinispan; and the second release candidate of Gradle 9.3. JDK 26 Build 29 remains the current build in the JDK 26 early-access builds. More details on this release may be found in the release notes.
The TornadoVM project recently reached version 2.0, a major milestone for the open-source project that aims to provide a heterogeneous hardware runtime for Java. This release is likely to be of particular interest to teams developing LLM solutions on the JVM. The project automatically accelerates Java programs on multi-core CPUs, GPUs, and FPGAs. It does not replace existing JVMs, but instead adds the capability of offloading Java code to the backends,
If you've encountered SSL certificate errors while trying to download Maven dependencies from GitHub Packages, you're not alone. The error typically looks something like this: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException:unable to find valid certification path to requested target This happens because Java maintains its own truststore (cacerts file) that contains trusted SSL certificates. If GitHub's certificate isn't in your Java truststore, your build tool (Maven/Gradle) will refuse to connect.
The Java Virtual Machine (JVM) is a marvel of engineering, optimized for long-running, high-performance applications. Its just-in-time (JIT) compiler analyzes code as it runs, making sophisticated optimizations to deliver incredible peak performance. But this strength becomes a weakness in a serverless model. When a Lambda function starts cold, the JVM must go through its entire initialization process: loading classes, verifying bytecode and beginning the slow warm-up of the JIT compiler. This can take several seconds - an eternity for a latency-sensitive workflow.
In the first article we looked at the Java developer's dilemma: the gap between flashy prototypes and the reality of enterprise production systems. In the second article we explored why new types of applications are needed, and how AI changes the shape of enterprise software. This article focuses on what those changes mean for architecture. If applications look different, the way we structure them has to change as well.
First things first, you're going to select your LLM. You can go with OpenAI. It's a pretty standard choice for your Hello World. You're going to go to the documentation and you'll see how to actually do a Hello World using OpenAI. Of course, you'll see Python over there. Python is always there. I'm going to count as a win because we're starting to see examples in Java as well.
Perforce Software has introduced JRebel Enterprise, software that promises to accelerate the configuration of cloud-based Java development environments, and that enables incremental code changes to Java applications, eliminating the need to redeploy entire applications for every change, the company said. Announced August 19, JRebel Enterprise skips Java application redeploys for minor code changes and automatically configures Java environments to support changing Java development environments at enterprise scale, Perforce said.
The release of EclipseStore 3.0.0 delivers bug fixes and new features that introduce: GigaMap, a specialized collection aimed at optimizing performance and memory usage in EclipseStore; and Storage Graph Analysis, APIs that export a storage graph structure without user data.
The release of Spring gRPC 0.9.0 delivers notable changes such as: the removal of the GrpcClientFactoryCustomizer in favor of the GrpcChannelBuilderCustomizer interface and the ability to filter global interceptors.
