Convert Word Documents to HTML in Java Using Apache POI

Converting Microsoft Word documents into HTML is a common requirement for web publishing, document storage, and content transformation systems. In…

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Understanding and Fixing Sonar’s Serialization Warning in Java

When working with Java applications, especially in enterprise environments, static code analysis tools like Sonar often raise warnings related to…

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The Hidden Cost of Records: When Java Records Break Your Serialization, JPA, and Reflection-Heavy Code

Records are now a mainstream Java feature — clean, concise, and genuinely useful. But the introductory tutorials skip the part…

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C# 13 & .NET 9 vs Java 25: The Feature Gap Has Closed — Now What?

For decades, Java and C# traded punches on language features. In 2026, however, that fight looks a lot more like…

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Ways to Identify Your Apache Tomcat Server Version

Knowing the exact version of your Apache Tomcat server is essential for debugging, ensuring compatibility, applying security patches, and maintaining…

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RAG Architecture on the JVM: Building a Production-Ready Pipeline With LangChain4j

A practical walkthrough of embedding models, vector stores, retrieval strategies, prompt engineering, and evaluation — without leaving the JVM. 1.…

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Java Time API: Converting Between Date and Instant

Working with dates and times is a common requirement in applications, especially when dealing with distributed systems, APIs, or databases.…

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Java’s Memory Model Is Not What You Think: The Gap Between the JMM Spec and the JIT’s Actual Guarantees

The Java Memory Model is formally specified. The JIT implements a superset of that spec in ways the spec permits…

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Structured Concurrency and the Death of CompletableFuture Hell

What Java 21–26’s concurrency model actually changes at the architecture level. Not a feature tour — a genuine examination of…

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