Servlet Config vs Servlet Context in Java

🚀 Day 1 of My Java Journey Today I started learning Java, focusing on understanding the fundamentals that are directly useful in real-world development. Here’s a quick summary of what I worked on: ▪ Annotations and how they influence application behavior ▪ Retention policies and how long annotations remain available ▪ Using @RestController to build REST APIs in a simpler way ▪ The role of controllers in handling HTTP requests and responses ▪ Why using objects instead of strings leads to cleaner and more scalable code ▪ The limitation of in-memory storage for long-term data handling ▪ Using tools like RoboPOJO to quickly generate Java classes My goal is to keep things practical—focusing on writing clean code and understanding how things work behind the scenes. Looking forward to building more and improving consistently. https://lnkd.in/gBDrQuyC #Java #SpringBoot #BackendDevelopment #SoftwareEngineering #CodingJourney #LearningInPublic #Tech #Developers #APIs

🚀 Java 25 is bringing some seriously exciting improvements I’ve published a blog post where I break down the key features you should know about in Java 25👇 🔍 Here’s a quick preview of what’s inside: 🧩 Primitive Types in Patterns (JEP 507) Pattern matching gets even more powerful by supporting primitive types - making your code more expressive and reducing boilerplate. 📦 Module Import Declarations (JEP 511) Simplifies module usage with cleaner import syntax, helping you write more readable and maintainable modular applications. ⚡ Compact Source Files & Instance Main (JEP 512) A big win for simplicity! You can write shorter programs without the usual ceremony - perfect for beginners and quick scripts. 🛠️ Flexible Constructor Bodies (JEP 513) Constructors become more flexible, giving developers better control over initialization logic and improving code clarity. 🔒 Scoped Values (JEP 506) A modern alternative to thread-local variables, designed for safer and more efficient data sharing in concurrent applications. 🧱 Stable Values (JEP 502) Helps manage immutable data more efficiently, improving performance and reliability in multi-threaded environments. 🧠 Compact Object Headers (JEP 519) Optimizes memory usage by reducing object header size - a huge benefit for high-performance and memory-sensitive applications. 🚄 Vector API (JEP 508) Enables developers to leverage modern CPU instructions for parallel computations - boosting performance for data-heavy workloads. 💡 Whether you're focused on performance, cleaner syntax, or modern concurrency, Java 25 delivers meaningful improvements across the board. 👇 Curious to learn more? Check the link of full article in my comment. #Java #Java25 #SoftwareDevelopment #Programming #Developers #Tech #JVM #Coding #Performance #Concurrency

Still on Java 8? You're missing out. Java has evolved significantly. It's time to unlock its modern power. The rapid six-month release cadence means Java is innovating faster than ever. Modern versions aren't just about significant performance gains; they introduce powerful language features that streamline development, improve code readability, and address common boilerplate. Adopting these new features future-proofs your applications and significantly enhances developer experience. Here's why you should upgrade: - Records simplify data transfer objects, reducing boilerplate significantly. - Pattern Matching for instanceof and switch statements makes code cleaner. - Text Blocks dramatically improve readability for multi-line strings like SQL or JSON. - Virtual Threads

🚀 Built My First Java GUI Application I’ve just completed a To-Do List desktop app using Java Swing, and this project marked a big shift for me—from console-based programs to real interactive applications. 🔧 What the app does: Add tasks using a button or simply pressing Enter Display tasks dynamically in a GUI list Delete tasks with confirmation dialog Automatically save tasks to a file Load tasks on startup (data persistence) 🧠 What I learned: Event-driven programming (handling user actions instead of loops) Building interfaces with Swing (JFrame, JButton, JList, JTextField) Managing data between backend logic and UI File handling using BufferedReader and BufferedWriter Writing cleaner, reusable methods (DRY principle) ⚡ One of the biggest mindset shifts was moving from: Console → “run → input → output” To GUI → “wait → event → update UI” This project also helped me understand how real applications are structured—separating logic, storage, and interface. If you’re starting with Java, I highly recommend building something like this—it forces you to connect multiple concepts together. Open to feedback or ideas for the next version 👇 Project Link : https://lnkd.in/dc3UnJAf

One thing I like about Java is that the biggest progress is often not dramatic enough for social media. There is no single “magic” feature between Java 21 and 25 that changes everything overnight. What you get instead is something more valuable: a better platform. Between Java 21 and 25, Java added: ✅ Scoped Values, ✅ Structured Concurrency, ✅ Foreign Function & Memory API, ✅ Stream Gatherers, ✅ Class-File API, ✅ Compact Object Headers, ✅ Generational Shenandoah, ✅ more startup and profiling work, ✅ better JFR, ✅ and... cleaner syntax with unnamed variables and patterns, module import declarations, and more flexible constructor bodies. That is why I liked Frank Delporte’s video on the move from Java 21 to 25. It looks at Java the way real teams should look at it: not as isolated release notes, but as accumulated engineering progress between LTS versions. Too many people ignore the non-LTS releases and then act surprised when the next LTS contains a lot of change. Worth watching if you want a practical summary without drowning in JEP numbers. ➡️ https://lnkd.in/dnqmDUnj Are you on Java 25 yet?

Thanks, Daniel Witkowski, for sharing this episode of the Friends of OpenJDK (Foojay.io) podcast about the changes between Java 21 and 25. And to Jakob Jenkov, Jonathan Vila López, Ryan Svihla, Mary Grygleski, 👓 Anton Arhipov, Ronald Dehuysser, and Jonathan Ellis, who took the time to share their point of view!

## ☕ Advancing the Standard: Exploring Java 8 & 9 Interface Features I am excited to share my latest technical update from my Java Full Stack Web Development program at Tap Academy! Today, we delved into the significant evolution of *Interfaces* introduced in Java 8 and 9—features that have fundamentally changed how we design flexible and clean code. Traditionally, interfaces were strictly for abstract methods. However, modern Java allows us to do so much more: ### 🛠️ The Modern Interface Toolkit: Default Methods (Java 8): Enabled us to add new functionality to interfaces without breaking existing implementation classes. As seen in my PaymentGateway example, methods like refundPayment() can now have a default body. 🔄 * Static Methods (Java 8):* These allow us to define utility methods, like transactions(), that belong to the interface itself rather than an object instance. 🛠️ * Private & Private Static Methods (Java 9): This was a game-changer for DRY (Don't Repeat Yourself) principles. We can now encapsulate "redundant code" within the interface. By using private static void redundantCode(), we can share logic between default and static methods without exposing that logic to the outside world. 🔒 ### 💡 Why this matters for Developers? These updates shift interfaces from simple "contracts" to powerful tools for *API design*. They allow for better code reusability, cleaner hierarchies, and reduced boilerplate. Mastering these nuances is essential for building professional, enterprise-grade applications. A big thank you to *Tap Academy* for the clear architectural insights into these Java milestones! 👨💻✨ #Java8 #Java9 #SoftwareEngineering #TapAcademy #InterfaceDesign #CleanCode #FullStackDeveloper #CodingEvolution #BackendDevelopment #CareerGrowth

Java 17 Made DTOs Simpler, Cleaner and Better 👉 From Boilerplate Classes to concise records When to use Records: Use records when your class is mainly a data carrier (DTO): "I only need to store and transfer data, not modify it" When you create a record, Java gives you: 1. Fields (implicitly final) 2. Public Constructor 3.  Getter Methods (NO get prefix) 4.Built-in Methods 👉 equals() 👉 hashCode() 👉 toString() 5. Immutability (BIG advantage 🔥) No accidental changes Thread-safe by default Avoid records if your class needs: ❌ Setters / mutability ❌ Lazy loading ❌ Complex validation logic ❌ JPA Entity (⚠️ not recommended)

Understanding Java Class Loading & Memory Areas Today, I learned how Java manages memory during Class Loading. It helped me understand what happens behind the scenes when a program runs.  Simple Example: class Demo { static int x = 10; // Stored in Method/Class Area void show() { int y = 5; // Stored in Stack System.out.println(x + y); } } public class Main { public static void main(String[] args) { Demo obj = new Demo(); // Object stored in Heap obj.show(); } } **When this program runs: 1.Class is loaded into Method Area 2.Static variable (x) is initialized once 3.Object (obj) is created in Heap 4.Method execution happens in Stack #Java #Programming #LearningJourney #SDLC #Coding #Developer #CareerGrowth

💻 Modern Java Tricks I Actually Use to Save Time After 4 years working with Java, I realized: being a “senior” isn’t just about design patterns or DSA. It’s about knowing which language features cut down boilerplate. Even in 2025, I see teams still writing Java 8-style code: 20+ line DTOs Nested null checks everywhere Blocking futures slowing things down Switch statements that bite you with fall-through bugs Java 17–21 gives us tools to fix all that without extra lines of code. Some of my go-to features: Records → goodbye huge data classes Sealed Classes → safer type hierarchies Pattern Matching → no more casting headaches Switch Expressions → no accidental fall-throughs Text Blocks → clean SQL/JSON/HTML in code var → less noise, same type safety Streams + Collectors → readable pipelines Optional properly → avoid NPEs CompletableFuture → async calls made simple Structured Concurrency → async the modern way These aren’t just features—I’ve used them in real projects to write faster, cleaner code. 👇 Curious: which Java version is your team on? Drop a comment—I’ll reply to everyone. 🔁 If you know a teammate who still writes Java 8 style, share this with them. #Java #Java21 #SpringBoot #CleanCode #BackendEngineering #SoftwareDevelopment