Java at Microsoft

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 The post Microsoft’s OpenJDK builds now ready for Java 25 appeared first on Microsoft for Java Developers.

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, The post Unlocking MCP in JetBrains: How Copilot Uses Sampling, Prompts, Resources, and Elicitation appeared first on Microsoft for Java Developers.

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 The post Building a Runtime JAR inspector in 10 hours appeared first on Microsoft for Java Developers.

A recent issue was identified in the azure-resourcemanager libraries for Java regarding HTTP headers exceeding 8,192 bytes. Following analysis, this was addressed within the Azure SDK for Java by increasing the maximum response header size limit of “reactor-netty-http” to 256 KB, accommodating larger headers. To benefit from this mitigation, it is necessary to upgrade azure-core-http-netty The post “HTTP header exceeding 8,192 bytes” error when using the Azure SDK for Java appeared first on Microsoft for Java Developers.

IN ONE hour, all ONLINE, complete our new training for Generative AI for Beginners – Java Edition – part of the incredible Microsoft Generative AI series – Python, .NET and JavaScript. In this training get first-hand experience with Core Generative AI Techniques and Tools we’re using inside Microsoft: Foundry Local MCP Responsible AI Quick Start Star and The post Generative AI for Beginners – Java Edition launched appeared first on Microsoft for Java Developers.

Hello Java customers! We are happy to announce the latest July 2025 patch & security update release for the Microsoft Build of OpenJDK. Download and install the binaries today. OpenJDK 21.0.8 OpenJDK 17.0.16 OpenJDK 11.0.28 Check our release notes page for details on fixes and enhancements. The source code of our builds is available now The post Java OpenJDK July 2025 Patch & Security Update appeared first on Microsoft for Java Developers.

The artificial intelligence landscape presents unprecedented opportunities for Java developers. With decades of experience building robust enterprise applications using Spring, Quarkus and Jakarta EE, Java developers are uniquely positioned to create sophisticated AI solutions. The emergence of specialized AI libraries like LangChain4j enables them to leverage their existing expertise while building secure, scalable, and maintainable The post Microsoft and LangChain4j: A Partnership for Secure, Enterprise-Grade Java AI Applications appeared first on Microsoft for Java Developers.

Today, you can use Custom Instructions in JetBrains to speed up development while staying aligned with your team’s coding standards and personal preferences. Whether you’re working on a solo project or part of a larger team, adhering to consistent coding standards is essential. Custom Instructions provide a mechanism to reinforce team coding guidelines or embed The post Customize GitHub Copilot in JetBrains with Custom Instructions appeared first on Microsoft for Java Developers.

The Java ecosystem around Azure Cosmos DB has quietly grown a lot stronger in the first half of 2024. And the updates are especially exciting if you’re working on scalable apps or exploring GenAI workloads. From new support for vector search and indexing, to better throughput management and improved integrations with Apache Kafka, Spring Data, The post What’s New for Java Developers in Azure Cosmos DB (NoSQL)? appeared first on Microsoft for Java Developers.

Anthropic Claude Sonnet 4 and Claude Opus 4 are now available in GitHub Copilot Chat for JetBrains IDEs and Eclipse. Model Availability✨ Claude Sonnet 4: Available for users on Pro, Pro+, Business, and Enterprise plans. Claude Opus 4: Available for users on Pro+ and Enterprise plans. For full details, please see this documentation. How to Get Started🚀 JetBrains IDEs: Click the GitHub Copilot icon –> Open GitHub Copilot Chat-> The post Anthropic Claude Sonnet 4 and Opus 4 Now Available in GitHub Copilot for JetBrains and Eclipse appeared first on Microsoft for Java Developers.