How to use VarArgs in Java for flexible method arguments

📘 Day 62 – Core Java (Thread Creation & Life Cycle) ✅ ✔️ Learned the Thread life cycle and how threads work from creation to termination. ✔️ Learned two ways to create a thread in Java: 1️⃣ By extending the Thread class – override run() and call start() using the object. 2️⃣ By implementing the Runnable interface – implement run(), create a Thread object, and call start(). ✔️ Understood how start() begins a new thread while run() defines the task inside the thread.

🚀 Mini Project: Multithreaded File Downloader (Java) Just built a small but powerful console-based downloader to explore Java multithreading and concurrency in real-world use! 💡 What it does: Splits a file into chunks → downloads each in parallel threads → merges into one file ⚙️ 🧵 Concepts used: ExecutorService + Callable for managing threads AtomicLong for progress tracking (thread-safe updates) RandomAccessFile + HTTP Range requests for parallel I/O Live progress bar in the console 💪 Learned: Efficient thread management, synchronization, and I/O operations in Java. Even console-based — it feels like a mini download manager! ⚡ Next up: adding a Swing-based GUI with progress bars and pause/resume options 🎨 #Java #Multithreading #Concurrency #MiniProject #LearningInPublic #JavaDeveloper #DevelopersJourney

💡 Java Tip of the Day: Immutability = Simplicity + Safety Immutable classes are thread-safe and easy to reason about. ✅ Example: public final class User { private final String name; public User(String name) { this.name = name; } public String getName() { return name; } } No setters, all fields final, and the class itself final. Frameworks like String, Integer, and even DTOs often rely on immutability to ensure consistency. 💬 Do you use immutability often in your codebase? #Java #CleanCode #ThreadSafety #CodeTips

How Java Virtual Threads Handle I/O Blocking When a virtual thread in Java performs a blocking I/O call — for example, SocketChannel.read() — it doesn’t actually block a real OS thread. Instead, under the hood: 1️⃣ The JVM detects the blocking call. 2️⃣ The virtual thread unmounts from its carrier (real) thread. 3️⃣ Its Java stack is saved in a heap continuation. 4️⃣ The carrier thread is freed to run other tasks. 5️⃣ When the I/O operation completes, the virtual thread is resumed from the exact point it paused. This means that the JDK internals were significantly reworked to support this model. If you want to understand the mechanism deeper, check out the implementation of SocketChannelImpl.

The latest Inside Java Newscast looks at how JEP 517 proposes to update Java's HTTP Client to be compatible with HTTP/3. It has lower latency, loads more quickly, and leads to less network congestion and is currently used by about one-third of all websites. https://lnkd.in/eveQGZ4C

🚀 Just implemented a Multithreaded and Single-Threaded Server using Core Java Sockets! ⚙️ Understanding how ServerSocket and Socket classes handle communication between client and server . Building a single-threaded server to handle one client at a time — great for understanding the basics of request/response cycles. Extending it to a multi-threaded server to handle multiple clients simultaneously using Java threads. Code --> https://lnkd.in/g3P_KyHM 🖥️ Tech Used: Core Java, Socket Programming, Threads #Java #SocketProgramming #Multithreading #Networking #BackendDevelopment #LearningInPublic #CoreJava

A quick java tip about primitives In Java, the GC does not clean up primitives. Primitives aren’t stored on the heap; they live on the stack or inline inside objects, so they don’t need garbage collection. GC only collects heap objects like Integer, arrays, and anything created with new. Primitive fields inside an object are just part of that object’s memory and disappear when the object itself is collected. #java #javadeveloper #javaprogramming #programming

🔍 Difference Between == and .equals() In Java, both == and .equals() are used to compare strings — but they serve different purposes. ✅ == Operator 🔹 Compares references, not content. 🔹 Checks whether two string variables point to the same memory location. ✅ .equals() Method 🔸 Compares the actual content (values) of the strings. 🔸 Returns true if both strings have the same sequence of characters. 💭 In Simple Terms == → Compares memory address .equals() → Compares content #Java #ProgrammingBasics #StringComparison #LearningJourney Thanks to Anand Kumar Buddarapu Sir for your constant guidance and support.

Hey all! Today we can relax and enjoy #62 Optionals, it makes APIs safer by avoiding null and clarifying when values may be missing, we'll learn how to create, access the commom methods, and use it effectively in Java. Enjoy!