Java 25 Simplifies Main Method

What is garbage collection in java ? 🌀Garbage collection in java is the process by which jvm automatically identifies and frees memory occupied by objects that are no longer reachable in the program. 🌀java uses heap memory for objects 🌀Gc runs in the jvm .not in the application code 🌀Gc prevents memory leaks 🌀developers do not manually free the memory What is the Java8 Enhancement in GC ? Before Java8 PermGen stored the class metadata fixed size after java 8 Metaspace replaced PermGen stored in native memory Dynamically resizable -- improvements in G1 garbage collector for better pause times and enhanced gc logging and performance optimization. #JavaBackendDeveloper #InterviewPreparation #GarbageCollection

How a Fake JSON Library on Maven Central Just Delivered Cobalt Strike to Thousands of Java Devs Read the full report on - https://lnkd.in/g44EQ_f9

📘 Java Basics – Day 7 Variables in Java define where data is stored and how long it lives 👇 🔹 Local Variable → Declared inside a method → Accessible only within that method 🔹 Instance Variable → Declared inside a class but outside methods → Each object gets its own copy 🔹 Static Variable → Belongs to the class → Shared among all objects Understanding scope helps manage memory efficiently 💡 #JavaVariables #CoreJava #LocalVariable #StaticKeyword #JavaBasics #LearningJava

🚀 Day 7: Access Specifiers & Methods in Java • Learned about access specifiers — their definition, types, and purpose public, private, protected, and default • Understood how access specifiers control visibility and accessibility in Java • Learned about methods and their structure • Practiced method calling through hands-on Java coding • Strengthened understanding of code reusability and organization Building stronger object-oriented fundamentals step by step Keys Technologies #Java #CoreJava #AccessSpecifiers #Methods #LearningProgress #SoftwareDevelopment #Day7 (12/01/2026)

While revisiting Java fundamentals, I noticed how easily we say "Java is platform independent" without fully unpacking it. I decided to slow down and understand: > What exactly gets compiled > Why bytecode matters > How JVM abstracts the operating system Turned that learning into a short blog, mainly to test whether I could explain it clearly to myself. Sharing it here for anyone revisiting Java basics with a backend mindset. Link in comments. #Java #BackendEngineering #JVM

Day 1 – Packages & Access Modifiers in Java Today I worked on understanding how packages and access modifiers actually behave across classes and packages, not just their definitions. Key takeaways from today’s practice: # Packages -->Help organize code and avoid class name conflicts -->Control visibility when combined with access modifiers -->Essential for structuring large applications # Access Modifiers (practical behavior) default → accessible within the same package only public → accessible everywhere private → accessible only inside the same class protected → accessible within the same package and in subclasses outside the package I verified this by: -->Accessing members across different packages -->Testing access from non-subclasses vs subclasses -->Observing compile-time errors where access is restricted Writing the code made one thing clear: Understanding why something is not accessible is more important than memorizing rules. Thanks Prasoon Bidua sir for the clear explanations and emphasis on understanding concepts through practice. #Java #CoreJava #AccessModifiers #LearningInPublic

🔐 Java 17 Feature Spotlight: Sealed Classes Java 17 introduced Sealed Classes, giving developers controlled inheritance — a long-awaited balance between flexibility and safety. 💡 What problem do Sealed Classes solve? They allow a class or interface to explicitly define which classes are allowed to extend or implement it. public sealed interface Payment permits UPI, Card, NetBanking { } Only the permitted classes can implement Payment. No surprises. No unauthorized extensions. 🚀 Why this matters: ✅ Better domain modeling ✅ Stronger compile-time safety ✅ Cleaner and more predictable architecture ✅ Perfect fit for closed hierarchies (like enums, states, workflows) 🔄 Sealed + Records + Pattern Matching Together, they make code more expressive, readable, and less error-prone — especially in modern Java backends. Java is evolving — and features like this prove it’s becoming more robust, not more complex. #Java17 #SealedClasses #ModernJava #JavaDeveloper #BackendEngineering #InterviewPrep #CleanCode

🚀 Java Day 8 – Arrays (Revised & Coded) Today’s focus was on strengthening array fundamentals through hands-on Java implementations. I worked on the following problems: ✅ DuplicateFind – Identify duplicate elements ✅ IntersectionOfArrays – Find common elements between arrays ✅ PairSum – Check pairs with a given sum ✅ Sort01 – Efficiently sort 0s and 1s ✅ TripletSum – Find triplets matching a target sum ✅ UniqueFind – Identify the unique element 💡Code on github - https://lnkd.in/dFrPU2dU This session helped reinforce problem-solving skills, logic building, and efficient array handling in Java. 💡 On to more DSA practice and optimization! #Java #DSA #Arrays #CodingPractice #ProblemSolving #LearningJourney

What changed in Java over time? ☕🚀 Only the changes that actually mattered. Java didn’t evolve randomly — every major release solved a real developer pain 👇 🔹 Java 5–7 → Safety & simplicity Generics, autoboxing, enhanced for-loops 🔹 Java 8 → Cleaner, expressive code Lambdas, Streams API, functional programming 🔹 Java 11 (LTS) → Production stability Modern HTTP client, GC improvements 🔹 Java 17 (LTS) → Less boilerplate Records, pattern matching, sealed classes 🔹 Java 21 / 25 → Scalability & performance Virtual threads, structured concurrency 👉 Java didn’t get “replaced” — it adapted. And that’s why it’s still powering enterprises at scale. #Java #JavaDeveloper #BackendDevelopment #Programming #SoftwareEngineering #TechEvolution

A tiny Java feature that quietly saves hours of debugging Java 17 & Java 21 made NullPointerException actually helpful. Instead of cryptic stack traces, you now get:  ✅ Which variable is null  ✅ Which method call failed  ✅ What exactly went wrong Example: Cannot invoke getName() because user is null No guesswork. No extra logging. No “let me reproduce this locally”. Small change. Huge developer-experience win. If you’re still on older Java versions, this feature alone is a strong upgrade reason. #Java #Java17 #Java21 #DeveloperExperience #ProgrammingTips #BackendEngineering #CleanCode