Java
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Spring Boot 4 vs Quarkus 3 vs Micronaut 4: The Java Framework Decision in 2026
I have shipped real services on all three this year. Here is what actually separates them once the marketing slides…
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Exploring CTE Support in Hibernate with HQL
Common Table Expressions (CTEs) are one of the most powerful SQL features for writing readable, reusable, and recursive queries. Prior…
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Project Valhalla’s Value Classes Are Finally Real
What the new value keyword actually changes about heap layout, and why data-heavy Java applications should pay attention. For more than a…
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Build a Web Research AI Agent with Lanchain4j and Ollama
Running large language models locally using tools like Ollama fundamentally changes how we build AI applications. It enables fast experimentation,…
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The Expression Problem: Why Java’s Sealed Interfaces Are One Answer, Not The Answer
Adding a new type is trivial in object-oriented code. Adding a new operation is trivial in functional code. Nobody has…
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Building a Document Q&A RAG AI Assistant with LangChain4j
Large Language Models have transformed how applications interact with users, but they come with a major limitation: they do not…
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Spring AI Agent Skills Example
Large Language Models (LLMs) excel at reasoning, generating natural language, and answering complex questions, but enterprise AI applications require capabilities…
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Spring Dynamic Authorization Scopes Example
Modern enterprise applications often require fine-grained access control where different users, clients, and business scenarios need different levels of permissions.…
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Sealed Interfaces and Exhaustive Switch: Making Illegal States Unrepresentable
A compact, runnable example showing how sealed hierarchies plus pattern-matching switches turn a whole category of bugs into compile errors.…
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