Microsoft for Java Developers
News, updates, and insights for Java development with Microsoft tools, Azure services, and OpenJDK.
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Java OpenJDK October 2025 Patch & Security Update
Hello Java customers! We are happy to announce the latest July 2025 patch & security update release for the Microsoft Build of OpenJDK. Download and inst...
Latest posts
From Complexity to Simplicity: Intelligent JVM Optimizations on Azure
Introduction As cloud-native architectures scale across thousands of containers and virtual machines, Java performance tuning has become more distributed, complex, and error-prone than ever. As highlighted in our public preview announcement, traditional JVM optimization relied on expert, centralized operator teams manually tuning flags and heap sizes for large application servers. This approach simply doesn’t scale in today’s highly dynamic environments, where dozens—or even hundreds—of teams deploy cloud-native JVM workloads across diverse infrastructure. To address this, Microsoft built Azure Command Launch...
Announcing the Public Preview of Azure Command Launcher for Java
Today we are announcing the Public Preview of the Azure Command Launcher for Java, a new tool that helps developers, SREs, and infrastructure teams standardize and automate JVM configuration on Azure. The goal is to simplify tuning practices and reduce resource waste across Java workloads. JVM Tuning in a Cloud-Native World Before the rise of microservices, Java applications were typically deployed as Java EE artifacts (WARs or EARs) on managed application servers. Ops teams were responsible for configuring and tuning the JVM, often on powerful servers that hosted multiple applications on a single Java EE app...
Introducing Major New Agentic Capabilities for GitHub Copilot in JetBrains and Eclipse
GitHub Copilot is taking a major step forward with expanded, deeply integrated support for JetBrains and Eclipse — bringing a new generation of agentic, intelligent capabilities directly into your favorite Java IDEs. This release strengthens Copilot’s cross-IDE experience, unifies agentic workflows, and unlocks more powerful automation to help developers code faster, modernize confidently, and stay in flow. New Agentic Capabilities This is the year of the agents. Developers need more control than ever—both in how they work with agents and how agents adapt to their workflows. After introducing Custom Agents in ...
JDConf 2026 Is Coming With Modern Solutions for an Agentic World
Technology is accelerating faster than ever, and developers are once again at the helm, shaping the future of applications, intelligence, and enterprise systems. With the rise of large language models (LLMs), agent-oriented architectures, and AI-driven development paradigms, Java developers find themselves in a uniquely powerful position to modernize code already powering critical systems, and to build the software of tomorrow. Java remains one of the world’s most trusted languages for enterprise, cloud, mobile and mission-critical systems. As James Governor, from developer analyst firm RedMonk, recently...
MCP Registry and Allowlist Controls for Copilot in JetBrains and Eclipse Now in Public Preview
MCP registry and allowlist controls for GitHub Copilot in JetBrains IDEs and Eclipse are now available in public preview in nightly/pre-release builds. What’s new MCP Registry An MCP Registry is a directory of Model Context Protocol (MCP) servers. For users of JetBrains IDEs and Eclipse, you can now configure your MCP Registry and browse available MCP servers directly within your IDE. This greatly streamlines setup and provides a seamless experience for discovering and managing MCP servers right from the editor. Allow List Controls As an enterprise or organization owner, you can configure an MCP Registry...
Java and AI for Beginners: a practical video series for Java
If you're looking for a clear, no-nonsense path into generative AI on Java, this series is for you. Microsoft's Java and AI for Beginners video series is a set of short tutorials that introduce the concepts, tooling, and patterns you need to get started at a pace that respects your time and experience. What the series covers We help you through foundational ideas first and then move into hands-on examples: Each video is short and focused. Watch them in order if you are new to the space, or skip into the topics that match your immediate needs. Integrations you w...
Microsoft’s OpenJDK builds now ready for Java 25
We’re excited to announce that the Microsoft Build of OpenJDK binaries are now available for Java 25. As always, our builds aim to provide a high-quality, production-ready build of OpenJDK, with binaries tested across platforms (Windows, Linux, macOS) and backed by our support and release pipelines. With this release, we invite developers, teams, and organizations to start migrating to Java 25, and in doing so, to take advantage of the many enhancements that have accumulated since Microsoft Build of OpenJDK 21 (our previous LTS release). Microsoft Build of OpenJDK 25 is fully supported for deployment on Azure ...
Unlocking MCP in JetBrains: How Copilot Uses Sampling, Prompts, Resources, and Elicitation
With the enhanced capability of the MCP on JetBrains, you can now bring prompts, resources, and even interactive tools directly into your IDE interacting with MCP. This means more flexible workflows, deeper context, and smoother collaboration between Copilot and your coding environment. Let’s take a look at what you can do today with MCP Sampling, Prompts, Resources, and Elicitation. Prerequisites To easily enable everything, you can copy and paste these settings into your `mcp.json` file: MCP Sampling – Fine-Tune How Copilot Responds With MCP Sampling, you can...
Building a Runtime JAR inspector in 10 hours
Last Friday I was reviewing our backlog items in the Java Engineering Group, and found an idea we had when Log4Shell happened. To this day, there is still no main stream solution to "find in production where a given JAR is being used". Why runtime truth matters (Log4Shell) When Log4Shell hit, lots of teams hunted for log4j through source control and CI pipelines. Helpful, but incomplete. Two realities get in the way: Finding where a vulnerable artifact is present in production, at runtime, and whether is being used, is far more important than monitoring source code and build pipelines. We s...