The Evolution of Switch Statement in Java

Hey everyone! 👋 I just shared my latest Medium article about Exception Handling in Java, explaining what it is, why it matters, and how to use it effectively. 👉https://lnkd.in/gk6HPRjK

💡 Anonymous Classes vs Lambda Expressions in Java Ever wondered why we rarely see anonymous inner classes in modern Java code anymore? That’s because lambdas quietly took their place. ⚡ Let’s rewind a bit — Before Java 8, if you wanted to provide a short implementation for an interface or override a method just once, you had to write an anonymous inner class. Example 👇 Runnable r = new Runnable() { public void run() { System.out.println("Running with anonymous class..."); } }; new Thread(r).start(); Clean? Not really 😅 Now enter Lambda Expressions in Java 8 — A simpler, shorter way to express the same logic: Runnable r = () -> System.out.println("Running with lambda!"); new Thread(r).start(); ✅ Both achieve the same result. The difference? Lambdas made our code concise, readable, and closer to functional programming. 💬 Key takeaway: Anonymous classes still have their place — especially when you need to extend a class or override multiple methods — but for single-method interfaces, lambdas are the clean, modern choice. Write less. Read more. Think functional. #Java #LambdaExpressions #AnonymousClasses #CleanCode #JavaDeveloper #ProgrammingTips

Day 23 — The Real Power of Java Lies in Its Methods ⚡ Today, I focused on Java methods — and it felt like connecting the missing dots between logic and structure. We often write code that works, but methods make it organized, reusable, and clear. 💡 Here’s what I learned: - A method is simply a block of code designed to perform a specific task. - It helps reduce repetition and improves code readability. - There are two main types: Predefined methods → Already built-in (like Math.max(),System.out.println()) User-defined methods → Created by us to suit our logic 🧠 Important Concepts: - Method Signature → Includes method name + parameter list - Return Type → Tells what the method gives back (or void if nothing) - Parameters & Arguments → Input values that make methods flexible - Static vs Non-static → Static methods belong to the class (can be called directly) Non-static methods need an object to be called Why It Matters: - Breaking logic into methods made me realize how important modularity is. - Instead of writing long, tangled code — each method handles one job clearly and efficiently. 💬 Takeaway: Understanding methods isn’t just about syntax — it’s about writing smarter code that scales. #Java #Day23 #LearningJourney #Coding #MethodsInJava #ProgrammingBasics #SoftwareDevelopment

Skimmed this handy roundup of Java 25—and it’s a strong LTS jump for everyday coding. Record patterns, sequenced collections, and (preview) string templates clean up routine code, while module import declarations + compact source files cut boilerplate; on the runtime side, structured concurrency, scoped values, and new JFR profiling round out the upgrade. If you’re still on 21 LTS, which feature would tip you to 25 first? #womenwhocode #softwaredeveloper #softwareengineer https://lnkd.in/ep_8qpP3

☕ Java Execution Made Simple Have you ever wondered how your Java code actually runs behind the scenes? Let’s break it down step by step 👇 🧩 1️⃣ Source Code (.java) You write code in your IDE — it’s human-readable and logical. 👉 Example: System.out.println("Hello Java!"); ⚙️ 2️⃣ Java Compiler (javac) It converts your .java file into a .class file — called bytecode. 🗂️ Bytecode isn’t tied to any OS or processor. 📦 3️⃣ Bytecode (.class) This is platform-independent. You can run (Java fileName) it on any system that has JVM — that’s Java’s “write once, run anywhere” magic! ✨ 🧠 4️⃣ JVM (Java Virtual Machine) JVM takes care of everything at runtime: Class Loader → Loads classes Bytecode Verifier → Checks safety Interpreter → Executes bytecode line by line 🚀 5️⃣ JIT Compiler (Just-In-Time) JIT notices which parts of your code run frequently (called hotspots). It then converts those into machine code for faster execution. ⚡ 6️⃣ Cached Execution Next time the same code runs, JVM uses the cached native code — making it super fast! -- #Java #LearningTogether #CodingSimplified #ProgrammingTips #JVM #SoftwareEngineering

☕ The Power of main() in Java — and What Happens When You Overload or Override It If you’ve ever written a Java program, you’ve seen this familiar line: public static void main(String[] args) But what makes it so important — and can we overload or override it? Let’s explore 👇 🚀 Why the main() Method Matters The main() method is the entry point of every standalone Java application. When you run a class, the Java Virtual Machine (JVM) looks for the exact signature: public static void main(String[] args) This is where execution begins. Without it, your program won’t start unless another class or framework calls it. Breaking it down: public → JVM must be able to access it from anywhere. static → No object creation needed to run it. void → Doesn’t return a value. String[] args → Accepts command-line arguments. 🔁 Overloading the main() Method Yes, you can overload the main() method — just like any other method in Java. 👉 What happens? Only the standard main(String[] args) method is called by the JVM. Any overloaded versions must be called manually from within that method. So, overloading works — but it doesn’t change the JVM’s entry point. 🔄 Overriding the main() Method Overriding, however, is not possible in the traditional sense. Since main() is static, it belongs to the class, not to an instance. Static methods can’t be overridden, but they can be hidden if you declare another main() in a subclass. 💬 Have you ever tried overloading the main() method just out of curiosity? What did you discover? #Java #Programming #OOP #SoftwareDevelopment #LearningJava #CodingConcepts #Developers #TechEducation #CodeNewbie

🔥 Clarity & Predictability in Modern Java In software, two principles are timeless: clarity and predictability. Modern Java, especially with data-oriented programming, allows us to be explicit: * Clear data structures → no hidden state * Explicit lifecycles → no magic behind the scenes * Minimal reflection → predictable behavior Combine this with a reactive mindset using Mutiny, Vert.x, RSocket: * Everything becomes a pipeline * Data flows are explicit and non-blocking * End-to-end processing is predictable * Side effects are isolated 💡 Why it matters: * Easier to reason about, debug, and maintain * Cloud-native and serverless ready * True end-to-end reactive behavior without surprises Bottom line: Modern Java + Reactive-native tools = clarity, predictability, and robust pipelines. If your code isn’t explicit, it’s probably legacy waiting to fail.