Java Exception Handling with Try-Catch Blocks

Runnable vs Callable in Java: when to use which When working with ExecutorService, you typically submit tasks in one of two forms: Runnable or Callable. They may look similar (especially with lambdas), but they serve different purposes. #Java #Concurrency #Multithreading #SoftwareEngineering #BackendDevelopment

Java in 2026: Outdated or unstoppable? ⚡ While trends change, Java continues to dominate where it matters most—enterprise systems, scalability, and reliability. Smart developers don’t follow hype—they follow demand. 🔗 www.nmkglobalinc.com #javaisnotdead #devcommunity #softwareengineering #techtrends #programminglife #backenddeveloper #cloudcomputing #careergrowth #techindustry #nmkglobal #nmkglobalinc

🚀 The Enhanced for Loop (for-each) (Java) The enhanced 'for' loop, also known as the 'for-each' loop, provides a simplified way to iterate over arrays and collections. It automatically iterates through each element in the collection without requiring explicit index management. This makes the code more readable and less prone to errors. However, it doesn't provide access to the index of the current element. #Java #JavaDev #OOP #Backend #professional #career #development

Let’s test your Java fundamentals 👇 What is the purpose of the synchronized keyword in Java? A) Import libraries B) Handle exceptions C) Prevent concurrent thread access D) Speed up execution 💬 Comment your answer ✔ Correct answer: C 💡 Explanation: synchronized is used to control access to critical sections, ensuring only one thread executes at a time and preventing data inconsistency. 🎯 Take the full test: https://lnkd.in/ghXvtHJW #Java #Multithreading #SoftwareEngineering #Developers #CareerGrowth

🚀 100 Days of Java Tips — Day 13 Tip: Use "@Transactional" carefully in Spring Boot ⚠️ Most developers use "@Transactional" but very few understand how it actually works. Common mistake: Putting "@Transactional" everywhere ❌ Why this is dangerous: • Can cause unexpected rollbacks • Performance issues in large operations • Bugs that are hard to debug Important things to know: • It works only on public methods • Internal method calls don't trigger it • Rollback happens only for runtime exceptions by default Best practice: Use "@Transactional" only where needed and understand the scope of your transaction don't just use annotations blindly Understand what's happening under the hood Have you ever faced issues with transactions? 👇 #Java #SpringBoot #JavaTips #BackendDevelopment #SoftwareEngineering #Microservices #Developers #CleanCode #Tech

🚨 Java Virtual Threads are NOT a free scalability upgrade Yes, they’re one of the most exciting things in Java in years. But deploying them in production without understanding the trade-offs is risky. #Java #ProjectLoom #Concurrency #Backend #SystemDesign

☕ From CompletableFuture to Structured Concurrency -> Java’s Evolution (8 → 26) 👉 Concurrency in Java has changed more in the last few releases than in the last decade. Here’s the shift 👇 ▸ Java 8 -> CompletableFuture CompletableFuture.supplyAsync(() -> fetchUser()) .thenCombine(fetchOrders(), (u, o) -> u + o); ▸ Java 21 -> Virtual Threads try (var executor = Executors.newVirtualThreadPerTaskExecutor()) { executor.submit(() -> processRequest()); } ▸  Java 21+ -> Structured Concurrency try (var scope = new StructuredTaskScope.ShutdownOnFailure()) { var u = scope.fork(() -> fetchUser()); var o = scope.fork(() -> fetchOrders()); scope.join(); return u.resultNow() + o.resultNow(); } ▸ Java 21+ -> Scoped Values ScopedValue.where(USER, "Priya").run(() -> process()); The shift isn’t just technical, it’s about making concurrency simpler, more predictable, and easier to scale. #Java #Concurrency #JavaDeveloper #BackendDevelopment #VirtualThreads #StructuredConcurrency #JVM #SoftwareEngineering #OpenToWork #ImmediateJoiner

🚀 Callable and Future in Java Concurrency The `Callable` interface is similar to `Runnable` but allows threads to return a result and throw checked exceptions. The `Future` interface represents the result of an asynchronous computation. You can submit `Callable` tasks to an `ExecutorService` and obtain a `Future` object, which allows you to check if the task is complete, retrieve the result, or cancel the task. `Callable` and `Future` are essential for asynchronous programming and handling long-running operations in a non-blocking manner. Learn more on our app: https://lnkd.in/gefySfsc #Java #JavaDev #OOP #Backend #professional #career #development

When to use Java Streams (and when not)  Java Streams can make code clean and expressive.  But from experience:   ✔ Use Streams for simple transformations   ✔ Avoid them when logic becomes complex   ✔ Prioritize readability over clever code  Just because you can use Streams doesn’t mean you should.  #Java #JavaStreams #CleanCode #BackendDevelopment

Java devs: Optional is not just a null check in a trench coat. Stop doing this: if (optional.isPresent()) { return optional.get(); } Start doing this: optional .map(User::getEmail) .filter(email -> email.endsWith(".com")) .orElse("unknown") Chainable. Readable. No NullPointerException in sight. That's what Optional was built for. #Java #Programming #CleanCode #SoftwareEngineering #BackendDev