Getting Started Archives - A N M Bazlur Rahman https://bazlur.ca/category/gettingstarted/ Java Champion 🏆 Empowering Developers through Speaking đŸ—Ŗī¸ Writing ✍ī¸ Mentoring 🤝 & Community Building 🌍 Published Author 📖 Contributing Editor at InfoQ and Foojay.IO Mon, 15 Dec 2025 04:45:26 +0000 en-US hourly 1 https://wordpress.org/?v=6.8.3 https://i0.wp.com/bazlur.ca/wp-content/uploads/2022/07/cropped-klara-and-sun.jpeg?fit=32%2C32&ssl=1 Getting Started Archives - A N M Bazlur Rahman https://bazlur.ca/category/gettingstarted/ 32 32 207159250 When Does Java’s Foreign Function & Memory API Actually Make Sense? https://bazlur.ca/2025/12/14/when-does-javas-foreign-function-memory-api-actually-make-sense/ https://bazlur.ca/2025/12/14/when-does-javas-foreign-function-memory-api-actually-make-sense/#respond Mon, 15 Dec 2025 04:45:26 +0000 https://bazlur.ca/?p=114063 Every new Java release introduces a shiny feature. The Foreign Function & Memory (FFM) API, finalized in Java 22, is one of those headline acts: it promises safe native calls without JNI and off-heap memory you can manage. But the real question is not “can I use it?” but “should I reach for it?” The ... Read more

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]]> https://bazlur.ca/2025/12/14/when-does-javas-foreign-function-memory-api-actually-make-sense/feed/ 0 114063 Building Robust AI Applications with LangChain4j Guardrails and Spring Boot https://bazlur.ca/2025/06/21/building-robust-ai-applications-with-langchain4j-guardrails-and-spring-boot/ https://bazlur.ca/2025/06/21/building-robust-ai-applications-with-langchain4j-guardrails-and-spring-boot/#respond Sat, 21 Jun 2025 16:29:56 +0000 https://bazlur.ca/?p=114012 As AI applications become increasingly complex, ensuring that language models behave predictably and safely is paramount. LangChain4j’s guardrails feature provides a powerful framework for validating both the inputs and outputs of your AI services. This article demonstrates how to implement comprehensive guardrails in a Spring Boot application, with practical examples that you can adapt to ... Read more

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]]> https://bazlur.ca/2025/06/21/building-robust-ai-applications-with-langchain4j-guardrails-and-spring-boot/feed/ 0 114012 Java’s Structured Concurrency: Finally Finding Its Footing https://bazlur.ca/2025/05/25/javas-structured-concurrency-finally-finding-its-footing/ https://bazlur.ca/2025/05/25/javas-structured-concurrency-finally-finding-its-footing/#respond Sun, 25 May 2025 04:48:59 +0000 https://bazlur.ca/?p=113974 The structured concurrency API changed again after two incubations and four rounds of previews. Ideally, this scenario is unexpected. However, given its status as a preview API, such changes can occur, as was the case here. These changes lend considerable maturity to the API, and I am hopeful it will now stabilize without requiring further ... Read more

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]]> https://bazlur.ca/2025/05/25/javas-structured-concurrency-finally-finding-its-footing/feed/ 0 113974 āĻ§ā§āĻ˛ā§‹āĻ° āĻ¸ā§āĻŦāĻžāĻĻ https://bazlur.ca/2025/05/21/%e0%a6%a7%e0%a7%81%e0%a6%b2%e0%a7%8b%e0%a6%b0-%e0%a6%b8%e0%a7%8d%e0%a6%ac%e0%a6%be%e0%a6%a6/ https://bazlur.ca/2025/05/21/%e0%a6%a7%e0%a7%81%e0%a6%b2%e0%a7%8b%e0%a6%b0-%e0%a6%b8%e0%a7%8d%e0%a6%ac%e0%a6%be%e0%a6%a6/#respond Thu, 22 May 2025 00:45:19 +0000 https://bazlur.ca/?p=113968 Part 1: Part 2   āĻ§ā§āĻ˛ā§‹āĻ° āĻ¸ā§āĻŦāĻžāĻĻ āĻ•ā§‡āĻŽāĻ¨ āĻšā§Ÿ? āĻ†āĻŽāĻžāĻĻā§‡āĻ° āĻ•āĻžāĻ°ā§‹āĻ°āĻ‡ āĻœāĻžāĻ¨āĻžāĻ° āĻ•āĻĨāĻž āĻ¨ā§Ÿ! āĻāĻ“ āĻ•āĻŋ āĻœāĻžāĻ¨āĻžāĻ° āĻŽāĻ¤ āĻ•āĻŋāĻ›ā§? āĻ¤āĻŦā§‡ āĻ›â€™āĻŦāĻ›āĻ°ā§‡āĻ° āĻ‡āĻ‰āĻ¸ā§āĻĢ āĻāĻ–āĻ¨ āĻāĻ‡ āĻ¸ā§āĻŦāĻžāĻĻāĻŸāĻžāĻ° āĻ¸āĻžāĻĨā§‡ āĻŦā§‡āĻļāĻŋ āĻĒāĻ°āĻŋāĻšāĻŋāĻ¤āĨ¤ āĻ§ā§āĻ˛ā§‹ā§Ÿ āĻ¤āĻžāĻ° āĻœāĻŋāĻ­ā§‡āĻ¤ā§‡ āĻāĻ•āĻŸāĻž āĻ¯ā§‡āĻ¨ āĻĒā§āĻ°āĻ˛ā§‡āĻĒ āĻĒā§œā§‡ āĻ—ā§‡āĻ›ā§‡, āĻ—āĻ˛āĻžāĻ° āĻĒāĻŋāĻ›āĻ¨ā§‡āĻ“ āĻ–āĻžāĻ¨āĻŋāĻ•āĻŸāĻž āĻœāĻŽā§‡ āĻ†āĻ›ā§‡āĨ¤ āĻŽāĻ¨ā§‡ āĻšā§Ÿ āĻāĻ•āĻŸāĻž āĻ–āĻ¸āĻ–āĻ¸ā§‡ āĻĒāĻ°ā§āĻĻāĻžāĨ¤ “āĻŽāĻž,” āĻ¸ā§‡ āĻŽāĻžāĻā§‡ āĻŽāĻžāĻā§‡ āĻ­āĻžāĻ™āĻž āĻ—āĻ˛āĻžā§Ÿ āĻ¨āĻžāĻ˛āĻŋāĻļ āĻ•āĻ°ā§‡, “āĻ†āĻŽāĻžāĻ° ... Read more

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]]> https://bazlur.ca/2025/05/21/%e0%a6%a7%e0%a7%81%e0%a6%b2%e0%a7%8b%e0%a6%b0-%e0%a6%b8%e0%a7%8d%e0%a6%ac%e0%a6%be%e0%a6%a6/feed/ 0 113968 Chat with Your Knowledge Base: A Hands-On Java & LangChain4j Guide https://bazlur.ca/2025/04/18/chat-with-your-knowledge-base-a-hands-on-java-langchain4j-guide/ https://bazlur.ca/2025/04/18/chat-with-your-knowledge-base-a-hands-on-java-langchain4j-guide/#respond Fri, 18 Apr 2025 06:50:00 +0000 https://bazlur.ca/?p=113934 Disclaimer: This article details an experimental project built for learning and demonstration purposes. The implementation described is not intended as a production-grade solution. Some parts of the code were generated using JetBrains’ AI Agent, Junie. Large Language Models (LLMs) like GPT-4, Llama, and Gemini have revolutionized how we interact with information. However, their knowledge is ... Read more

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]]> https://bazlur.ca/2025/04/18/chat-with-your-knowledge-base-a-hands-on-java-langchain4j-guide/feed/ 0 113934 Building FormPilot: My Journey Creating an AI-Powered Form Filler with RAG, LangChain4j, and Ollama https://bazlur.ca/2025/04/06/building-formpilot-my-journey-creating-an-ai-powered-form-filler-with-rag-langchain4j-and-ollama/ https://bazlur.ca/2025/04/06/building-formpilot-my-journey-creating-an-ai-powered-form-filler-with-rag-langchain4j-and-ollama/#respond Sun, 06 Apr 2025 23:14:15 +0000 https://bazlur.ca/?p=113911 Disclaimer: This article details an experimental project built for learning and demonstration purposes. The implementation described is not intended as production-grade solution. Some parts of the code were generated using JetBrains’ AI Agent, Junie. Have you ever found yourself filling out the same information on web forms over and over again? Name, email, address, phone ... Read more

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]]> https://bazlur.ca/2025/04/06/building-formpilot-my-journey-creating-an-ai-powered-form-filler-with-rag-langchain4j-and-ollama/feed/ 0 113911 DIY JVM Part 1: Decoding the Magic – Parsing Java https://bazlur.ca/2025/02/21/diy-jvm-part-1-decoding-the-magic-parsing-java/ https://bazlur.ca/2025/02/21/diy-jvm-part-1-decoding-the-magic-parsing-java/#respond Fri, 21 Feb 2025 05:34:09 +0000 https://bazlur.ca/?p=113829 It’s been about 15 years since I last touched C programming. Back in university, I remember writing a small C program for an assignment—just a simple parser that could scan a C source file and check if its structures were correctly formed. It was nothing fancy, just a mundane academic exercise, and to be honest, ... Read more

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]]> https://bazlur.ca/2025/02/21/diy-jvm-part-1-decoding-the-magic-parsing-java/feed/ 0 113829 Java Tips # 01 –  Writing Shebang Scripts in Pure Java https://bazlur.ca/2024/10/27/java-tips-01-writing-shebang-scripts-in-pure-java/ https://bazlur.ca/2024/10/27/java-tips-01-writing-shebang-scripts-in-pure-java/#respond Sun, 27 Oct 2024 06:15:13 +0000 https://bazlur.ca/?p=113720 Did you know you can write a CLI script in Java just as easily as you would in a bash script, and run it directly from the shell? This is commonly called a shebang script, though we are mostly familiar with writing them in bash. Bash scripts are great, but they can be obscure to ... Read more

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]]> https://bazlur.ca/2024/10/27/java-tips-01-writing-shebang-scripts-in-pure-java/feed/ 0 113720 Exploring New Features in JDK 23: Simplifying Java with Primitive Type Patterns with JEP 455 https://bazlur.ca/2024/06/01/exploring-new-features-in-jdk-23-simplifying-java-with-primitive-type-patterns-with-jep-455/ https://bazlur.ca/2024/06/01/exploring-new-features-in-jdk-23-simplifying-java-with-primitive-type-patterns-with-jep-455/#respond Sat, 01 Jun 2024 09:38:46 +0000 https://bazlur.ca/?p=102652 Java continues to evolve, introducing features that streamline coding practices and improve readability. JEP 455 is one such proposal that enhances the switch statement, making it more versatile and expressive. This article delves into how JEP 455 can be utilized to handle complex decision-making scenarios more efficiently. We’ll examine a practical example to illustrate the ... Read more

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]]> https://bazlur.ca/2024/06/01/exploring-new-features-in-jdk-23-simplifying-java-with-primitive-type-patterns-with-jep-455/feed/ 0 102652 Exploring New Features in JDK 23: A Sneak Peek https://bazlur.ca/2024/06/01/exploring-new-features-in-jdk-23-a-sneak-peek/ https://bazlur.ca/2024/06/01/exploring-new-features-in-jdk-23-a-sneak-peek/#respond Sat, 01 Jun 2024 07:49:29 +0000 https://bazlur.ca/?p=102642 The main method and println With JDK 23 on the horizon, I decided to dive into some of its new features by running the following code in the CLI: void main() { println("Hello World"); var name = readln("Enter your name: "); println("Your name is " + name); var age = readln("Enter your age: "); println("Your ... Read more

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