--- title: "#java-developer articles | Hashnode" description: "Explore 78 articles tagged #java-developer on Hashnode. Tutorials, guides, and how-tos from the community." url: "https://hashnode.com/tag/java-developer" --- Tag # #java-developer 78 posts · 16 followers [Amit kumar](https://hashnode.com/@amPruthi) · [Aug 4](https://hashnode.com/posts/excel-to-a-digital-planning-system-an-architecture-story/6a71b937d8eaa0b3fbdab839) ### [From 70 Excel Sheets to a Digital Planning System: An Architecture Story](https://amitp-dev.hashnode.dev/excel-to-a-digital-planning-system-an-architecture-story?utm_source=hashnode&utm_medium=feed) For years, our production and sales planning ran on Excel. Not one file — a set of roughly 70 interconnected sheets, each owned by a different planner, each with its own formulas, macros and joins. So 6 min read · [amitp-dev.hashnode.dev](https://amitp-dev.hashnode.dev/excel-to-a-digital-planning-system-an-architecture-story?utm_source=hashnode&utm_medium=feed) [Himanshu Jha](https://hashnode.com/@StackedCoder) · [Apr 25](https://hashnode.com/posts/aws-vs-spring-boot-schedulers-making-the-right-choice-for-scalable-cron-jobs/69ec7b545a627d8e522f676f) ### [AWS vs Spring Boot Schedulers: Making the Right Choice for Scalable Cron Jobs](https://himanshu-jha.hashnode.dev/aws-vs-spring-boot-schedulers-making-the-right-choice-for-scalable-cron-jobs?utm_source=hashnode&utm_medium=feed) Choosing between AWS and Spring Boot schedulers is ultimately a question of scale and reliability. 12 min read · [himanshu-jha.hashnode.dev](https://himanshu-jha.hashnode.dev/aws-vs-spring-boot-schedulers-making-the-right-choice-for-scalable-cron-jobs?utm_source=hashnode&utm_medium=feed) [Sumit Prasad](https://hashnode.com/@sprasad035) · [Mar 17](https://hashnode.com/posts/upgrade-from-java-11-to-java-17-21-25-rhel-rocky-alma-centos-stream/69b913b53cc3ab373f895f99) ### [Upgrade from Java 11 to Java 17, 21, 25 (RHEL / Rocky / Alma / CentOS Stream)](https://technotesbysumit.hashnode.dev/upgrade-from-java-11-to-java-17-21-25-rhel-rocky-alma-centos-stream?utm_source=hashnode&utm_medium=feed) Upgrade Java 11 to 17/21/25 on RHEL-based Linux easily 4 min read · [technotesbysumit.hashnode.dev](https://technotesbysumit.hashnode.dev/upgrade-from-java-11-to-java-17-21-25-rhel-rocky-alma-centos-stream?utm_source=hashnode&utm_medium=feed) [Azam Pasha](https://hashnode.com/@azampasha) · [Dec 30, 2025](https://hashnode.com/posts/spring-security-complete-guide/695400909000425545121701) ### [Spring Security Complete Guide](https://spring-security-zero-to-hero-guide.hashnode.dev/spring-security-complete-guide?utm_source=hashnode&utm_medium=feed) Master Spring Security in 30 mins! Complete beginner guide with copy-paste code, real-world stories, diagrams. Secure Java apps like Netflix. No experience 5 min read · [spring-security-zero-to-hero-guide.hashnode.dev](https://spring-security-zero-to-hero-guide.hashnode.dev/spring-security-complete-guide?utm_source=hashnode&utm_medium=feed) [Mehedi Hasan Shawon](https://hashnode.com/@mehedicodes) · [Oct 5, 2025](https://hashnode.com/posts/goodbye-boilerplate-elegant-object-mapping-in-spring-boot-with-mapstruct/68e22fb87ced72bcf04674b3) ### [Goodbye Boilerplate: Elegant Object Mapping in Spring Boot with MapStruct](https://backendbasicswithmehedi.hashnode.dev/goodbye-boilerplate-elegant-object-mapping-in-spring-boot-with-mapstruct?utm_source=hashnode&utm_medium=feed) No more manual converters — let MapStruct handle your mapping logic automatically with compile-time safety and Spring Boot integration. 9 min read · [backendbasicswithmehedi.hashnode.dev](https://backendbasicswithmehedi.hashnode.dev/goodbye-boilerplate-elegant-object-mapping-in-spring-boot-with-mapstruct?utm_source=hashnode&utm_medium=feed) [Aashirwad Kumar](https://hashnode.com/@aashirwad01) · [Oct 2, 2025](https://hashnode.com/posts/quote-negotiation-assistant-for-industrial-supply-chains-phase-1-mvp/68dee8c75447207a0172bfbd) ### [Quote Negotiation Assistant for Industrial Supply Chains (Phase 1 – MVP)](https://aashirwad01.hashnode.dev/quote-negotiation-assistant-for-industrial-supply-chains-phase-1-mvp?utm_source=hashnode&utm_medium=feed) With Big Billion Day sales and Great Indian Festival sales, I found an idea for a project relevant to the B2B domain. Got my first taste of pricing in Flipkart’s Big Billion Days (2016–17). Seeing pen drives sold at ₹1 sparked my curiosity about B2C ... 4 min read · [aashirwad01.hashnode.dev](https://aashirwad01.hashnode.dev/quote-negotiation-assistant-for-industrial-supply-chains-phase-1-mvp?utm_source=hashnode&utm_medium=feed) [Adhithya Lakshmivarapu](https://hashnode.com/@AdhithyaLakshmivarap) · [Sep 28, 2025](https://hashnode.com/posts/understanding-jvm-architecture-the-beating-heart-of-java-by-adhithya-lakshmivarapu/68d8dd7e55320d4cac3ce062) ### [Understanding JVM Architecture: The Beating Heart of Java | By Adhithya Lakshmivarapu](https://understanding-jvm-architecture.hashnode.dev/understanding-jvm-architecture-the-beating-heart-of-java-by-adhithya-lakshmivarapu?utm_source=hashnode&utm_medium=feed) The JVM architecture facilitates Java's cross-platform capabilities, allowing seamless execution of Java applications 7 min read · [understanding-jvm-architecture.hashnode.dev](https://understanding-jvm-architecture.hashnode.dev/understanding-jvm-architecture-the-beating-heart-of-java-by-adhithya-lakshmivarapu?utm_source=hashnode&utm_medium=feed) [Pankaj Deshmukh](https://hashnode.com/@pankajd) · [Aug 20, 2025](https://hashnode.com/posts/path-to-java-proficiency/68a59d78a958bbb66ee031a1) ### [Path To Java Proficiency](https://javalearningroadmap.hashnode.dev/path-to-java-proficiency?utm_source=hashnode&utm_medium=feed) Step-by-step guide to mastering Java, from beginner to advanced, covering core concepts, frameworks, web development, and best practices 5 min read · [javalearningroadmap.hashnode.dev](https://javalearningroadmap.hashnode.dev/path-to-java-proficiency?utm_source=hashnode&utm_medium=feed) [LakshmiPerumal](https://hashnode.com/@Lakshmiperumal) · [Jul 7, 2025](https://hashnode.com/posts/deployment-strategies-in-microservices/686bfd4733629d62f8d731cd) ### [Deployment Strategies in Microservices](https://malalakshmi.hashnode.dev/deployment-strategies-in-microservices?utm_source=hashnode&utm_medium=feed) What deployment strategies are commonly employed in the domain of Microservices?How to deploy microservices? Common deployment strategies in the domain of microservices include: Recreate Deployment We stop the old version of the app. Then we deploy... 14 min read · [malalakshmi.hashnode.dev](https://malalakshmi.hashnode.dev/deployment-strategies-in-microservices?utm_source=hashnode&utm_medium=feed) [LakshmiPerumal](https://hashnode.com/@Lakshmiperumal) · [Jul 7, 2025](https://hashnode.com/posts/transaction-management2pc-and-3pc-commit-microservices/686b9310943e2c432918c584) ### [Transaction Management(2PC & 3PC commit) -- Microservices](https://malalakshmi.hashnode.dev/transaction-management2pc-and-3pc-commit-microservices?utm_source=hashnode&utm_medium=feed) What is a Transaction? A transaction is a series of actions that must all be executed successfully. If any one of the actions fails, the entire set of operations is rolled back, leaving the system in its previous stable state. A transaction has the f... 10 min read · [malalakshmi.hashnode.dev](https://malalakshmi.hashnode.dev/transaction-management2pc-and-3pc-commit-microservices?utm_source=hashnode&utm_medium=feed)