GitHub CodeQL adds Java 26 support, improves analysis parity

🚀 Java 21 Migration Guide using GitHub Copilot (Spec-Driven Approach) Migrating to Java 21 isn’t just about upgrading the JDK. It involves: • Refactoring legacy code • Handling deprecated APIs • Ensuring performance & security (CVE fixes) • Avoiding production risks I explored a structured way to solve this using: 👉 Spec-Driven Development + GitHub Copilot Instead of ad-hoc changes, this approach: ✔ Defines clear migration rules ✔ Uses Copilot for consistent refactoring ✔ Makes upgrades repeatable and safer If you're working on: 1. Java modernization 2. Backend systems 3. AI-assisted development This guide will help 👇 🔗 https://lnkd.in/ga2_3gfK 💡 Key topics covered: #Java21 #JavaMigration #GitHubCopilot #SoftwareEngineering #ArtificialIntelligence #BackendDevelopment #Java

🚀 Evolution of Java — From OOP to Modern Scalable Systems Java didn’t just evolve… 👉 It transformed how we write, scale, and think about backend systems. 💡 Let’s take a quick journey through the most impactful versions: 🔹 Java 8 (2014) — LTS 👉 The turning point ✔️ Lambda Expressions ✔️ Streams API ✔️ Optional (goodbye NullPointerException 😅) ✔️ New Date & Time API 🔹 Java 11 (2018) — LTS 👉 Stability + modernization ✔️ New HttpClient API ✔️ String improvements (isBlank(), lines()) ✔️ var in lambda ✔️ Removed legacy modules → lighter JDK 🔹 Java 15 (2020) 👉 Developer productivity boost ✔️ Text Blocks (clean multi-line strings) ✔️ Sealed Classes (preview) ✔️ ZGC improvements (low latency apps) 🔹 Java 17 (2021) — LTS 👉 Enterprise-ready evolution ✔️ Sealed Classes (official) ✔️ Pattern Matching for instanceof ✔️ Improved switch (preview) ✔️ Better performance & security 🔹 Java 21 (2023) — LTS 👉 Game changer for scalability ✔️ Virtual Threads (Project Loom 🚀) ✔️ Pattern Matching for switch ✔️ Record Patterns ✔️ Sequenced Collections 🔹 Java 25 (2025) — LTS 👉 The future is being refined ✔️ Advanced concurrency improvements ✔️ Structured concurrency evolution ✔️ Performance & developer experience focus 🔥 What’s the real shift? 👉 From writing code ➡️ To building scalable, high-performance systems 💬 Ask yourself: Are you still coding like it’s Java 8… or leveraging the power of modern Java? 🚀 Which Java version (or feature) changed the way you code the most? #Java #Backend #SoftwareEngineering #Programming #SpringBoot #DevOps #Scalability #Tech

Your Docker image is 1GB. Your actual Java application JAR is 200MB. Where is the other 800MB coming from? JDK. Maven. Source code. Build cache. Tools you needed to BUILD the app — but have absolutely no reason to be in your PRODUCTION image. This is the problem Docker Multi Stage Builds solve. Here is how it works 👇 Stage 1 — Builder → Use a full JDK image to compile your code → Run Maven to build and package the JAR → This stage is heavy — and that is fine Stage 2 — Runtime → Start fresh with a minimal JRE image → Copy only the JAR from Stage 1 using COPY --from → Nothing else — no JDK, no Maven, no source code Result? → Final image goes from 1GB to 200MB → Zero build tools in production → Dramatically smaller attack surface → Faster image pulls across all environments Docker builds all stages but only the final stage becomes the image that gets pushed and deployed. All the heavy build stuff is discarded automatically. In my latest video I showed this live with a Java Spring Boot Application — built the same app with single stage and multi stage Dockerfile and showed the image size difference side by side. The numbers speak for themselves. 🔗 Link in comments 👇 Found this useful? Repost ♻️ #Docker #DevOps #DevOpsInterview #DockerInterview #Dockerfile #Containerization #DevOpsCommunity #ayushbuildstech

🚀 Spring Boot — From Confusion to Confidence But once I connected the dots, everything changed , Here’s what actually matters in Spring Boot: 🔹 Core Concepts ✔ IoC (Inversion of Control) ✔ Dependency Injection ✔ Bean Lifecycle 🔹 Backend Development ✔ REST API creation ✔ Request/Response handling ✔ Exception handling 🔹 Database Layer ✔ JPA & Hibernate ✔ Entity Mapping ✔ CRUD Operations 🔹 Real-World Skills ✔ DTO & Mapper ✔ Authentication & Authorization ✔ Writing clean & scalable code 💡 Biggest lesson: Spring Boot is not hard… It just requires the right approach. Stop memorizing. Start building. That’s when things click. 🔥 #SpringBoot #Java #BackendDeveloper #Programming #SoftwareEngineer #Learning #Developers

I just posted a new guide on how to trim the fat off your containers. We’re talking about taking a standard 1.2GB image and cutting it down to 400MB while making your builds way faster. The TL;DR: Use JRE-only base images (like Eclipse Temurin Alpine). Use Multi-Stage builds to keep Maven out of production. Use Layered JARs to maximize Docker caching. Read the full post here: https://lnkd.in/dD7YNAWa #Docker #SpringBoot #Java #Backend #DevOps #TechBlog

☕️Java 26 is here — and IntelliJ IDEA supports it from Day 1! The Java ecosystem isn’t slowing down — it’s accelerating. 🚀 With #Java26, we’re seeing meaningful steps toward a faster, more modern Java. 🔍 What’s new? • Performance improvements across the JVM • ~10 JEPs shaping the next wave of Java • New APIs for modern, scalable development • Stronger preview features worth experimenting with 💡 What stands out? Zero waiting time. IntelliJ IDEA already supports Java 26 from Day 1, so you can start exploring, testing, and building immediately — no setup friction, no delays. 👉 Whether you’re building microservices, high-scale backend systems, or enterprise platforms, staying current with Java releases is no longer optional — it’s a competitive advantage. 🔗 Dive into the official release notes: https://lnkd.in/dNXeGQaF #Java #Java26 #JavaDeveloper #JVM #SpringBoot #BackendDevelopment #SoftwareEngineering

Excited to share my first ever Medium article! 🎉 I wrote a deep dive on Build Tools & Maven for Spring Boot developers. Here's what's covered: → What build tools actually are & why every Java dev needs to understand them → How Maven fetches dependencies from Maven Central Repository → Maven's full build lifecycle — phase by phase → How the Spring Boot executable JAR is created If you've ever copy-pasted a pom.xml without fully understanding it — this one's for you. Link: https://lnkd.in/ghuv7wKp #Java #SpringBoot #Maven #BuildTools #SpringFramework #JavaDeveloper #BackendDeveloper #SoftwareEngineer #SoftwareDevelopment #100DaysOfCode #LearningInPublic #OpenToWork #TechCommunity #Programming #Coding #Developer #Tech

Day 16/45 – Java Backend Journey 🚀 Continuing my journey into Advanced Java, today I explored an essential skill for professional developers — Unit Testing. ✅ What I learned today: • Basics of Unit Testing • Writing test cases using JUnit • Mocking dependencies using Mockito • Testing business logic independently 💻 Practice Work: Wrote multiple unit test cases to validate application logic and used Mockito to mock dependencies for isolated testing. 📌 Code Progress (GitHub): Commit: https://lnkd.in/gvGtgvbP Why this matters: Unit testing ensures code reliability, maintainability, and fewer bugs in production, which is critical in real-world backend systems. 🚀 Growth Insight: Writing code is important, but writing testable and reliable code is what makes you a professional developer. Tech Stack I'm learning: Java | Spring Boot | MySQL | Redis | Kafka | Docker | Microservices | REST APIs | System Design | Git | Linux | AWS Consistently improving and documenting my journey in public. #Java #BackendDevelopment #SoftwareEngineer #SpringBoot #LearningInPublic #UnitTesting #JUnit #Mockito #GitHubJourney

Java's "Hello, world" has been an unfair first impression for years. Not because Java can't be productive. Because the first 60 seconds can feel like paperwork. (And yes, I ship Java for a living.) JEP 512 is Java quietly admitting something important: the on-ramp matters. If you teach Java, run workshops, or onboard new devs, this one is worth a look. The main idea: make tiny, single-file programs easier to run, without changing how we build real systems. At a high level, it introduces: - Compact source files: reduced ceremony for small, single-file programs. - Instance main methods: a simplified entry-point option (including a no-arg main) for small programs. The launcher still prefers the traditional main(String[] args) when present; the instance main is the fallback option. It also mentions small-program ergonomics aimed at learning/scratchpad use, like implicit imports from java.base and a java.lang.IO helper for quick console I/O. Concrete example: You're onboarding someone new to Java and you want them to practice loops and basic console input today. With less boilerplate up front, you can start with the concept, then "graduate" to named classes, packages, and modules when the file stops being small. Quick decision rule: - Use it for: workshops, onboarding, throwaway experiments, one-off parsing/debugging. - Avoid it for: production code, anything that needs packaging, modules, or a long-lived structure (it lives in the unnamed package/module context). If you're a Java dev, what's your rule: do you keep the explicit class + static main even for tiny experiments, or would you use the compact form when it fits? #java #jep #jdk #boilerplate #code #programming #oop

🚀From Chaos to Clarity: My Journey from Core Java to Spring Boot Ever felt like you're spending more time managing configurations than actually building something meaningful? 😅 👉 BEFORE (Core Java) Endless XML configs, manual setup, dependency headaches… “Main developer hoon ya configuration manager 😂” 👉 AFTER (Spring Boot) Auto-configuration, embedded servers, faster development… “Life sorted 😄” 💡 What changed? Spring Boot didn’t just simplify development—it changed the way I think about building applications. Instead of focusing on setup, I now focus on logic, features, and user experience. 🔥 Bonus Insight (Important for Beginners): Spring Boot is powerful, but don’t skip Core Java fundamentals. Understanding concepts like OOP, collections, multithreading, and JVM helps you truly master Spring Boot instead of just using it. 📌 Key Takeaway: Tools like Spring Boot don’t replace fundamentals—they amplify them. If you're starting your backend journey, trust the process: 👉 Core Java → JDBC → Servlets → Spring Core → Spring MVC → Hibernate → JPA → Spring Boot → Projects → Advanced (Security + Microservices) #Java #SpringBoot #BackendDevelopment #CodingLife #Developers #Programming #SoftwareDevelopment #LearningJourney