Java
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The Class-File API Replacing ASM: What It Means for Frameworks
Almost every Java developer has seen this error after a JDK upgrade: “Unsupported class file major version.” Behind it sits…
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Prompt Caching in Spring AI with Anthropic Claude
Prompt caching lets Claude reuse the processing it already did on a prompt prefix instead of re-reading it from scratch…
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Getting Started with FitNesse for Acceptance Testing in Java
FitNesse is a web-based wiki and acceptance-testing framework, originally built by Robert C. Martin as an extension of Ward Cunningham’s…
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New Features in Java 27
Java 27 (also called JDK 27) was released on September 15, 2026. It’s a regular six-month feature release, not an…
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Kotlin Coroutines vs Virtual Threads: Two Answers to Cheap Concurrency
Every few months, someone on a team asks the same question: now that Java has virtual threads, do we still…
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In-Process Inference vs Calling a Service: ONNX Runtime and DJL Against a Remote Model
Every Java team that adds a machine learning model faces the same early choice. Do you load the model inside…
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Time Zones as a Data Problem: tzdata Updates, java.time, and the Bugs That Survive
Most developers treat time zones as arithmetic. In reality, they are laws, and laws change on short notice. That makes…
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Upgrading Spring Framework Version in Spring Boot
Spring Boot does not let you reference the Spring Framework directly in most projects — instead, it manages the version…
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Vector Search for Java Developers: HNSW Intuition and pgvector in Practice
Search used to mean matching words. Today it often means matching meaning, and that is where vectors come in. An…
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