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Virtual Threads (Project Loom) – Lightweight Concurrency in Java Java 21 brings one of the most awaited concurrency updates – Virtual Threads from Project Loom . Designed to dramatically reduce the complexity and resource cost of multithreaded programming, virtual threads enable scalable, high-throughput applications without complicated thread management. 🚀 What are Virtual Threads? Virtual threads are lightweight threads managed by the Java Virtual Machine (JVM), not the OS. Unlike platform (or "native") threads, virtual threads use minimal memory and can scale to millions of concurrent tasks. ✅ Lightweight ✅ Non-blocking friendly ✅ Familiar API (same Thread class) ✨ Why They Matter Traditional Java threads are costly in memory (1MB+ per thread) and limited in scalability. With virtual threads, you can handle massive I/O-bound workloads using simple, synchronous-style code. ...

Java 25 Features (Preview) – What’s New in the Upcoming LTS Release Java 25 is expected to launch in September 2025 , and it brings with it exciting advancements in memory optimization, concurrency, and performance. Here's what we know so far about this upcoming release. 1. Stable Values (JEP 502 – Preview) This introduces immutable objects treated as constants by the JVM. Stable values help optimize startup time and improve performance in multi-threaded environments. static final StableValue<String> GREETING = StableValue.of("Hello"); System.out.println(GREETING.get()); 2. Removal of 32-bit x86 Port (JEP 503) Java 25 will remove support for the 32-bit x86 architecture to modernize the JDK and reduce maintenance overhead. 3. Value Classes (Project Valhalla – Expected) Value classes are identity-free, immutable data carriers that can be laid out more efficiently in memory. value class R...

Java 21 Features: The Complete Guide for Developers Java 21, released in September 2023, is a major Long-Term Support (LTS) release. It brings cutting-edge features like virtual threads, record patterns, string templates, and more. Let’s dive into what’s new in Java 21! 1. Virtual Threads (JEP 444) Part of Project Loom, virtual threads are lightweight threads that scale your applications with minimal changes. try (var executor = Executors.newVirtualThreadPerTaskExecutor()) { executor.submit(() -> System.out.println("Hello from a virtual thread!")); } They’re ideal for handling high-concurrency applications like web servers. 2. Record Patterns (JEP 440) Pattern matching now supports records, making deconstruction more elegant: record Point(int x, int y) {} static void print(Object obj) { if (obj instanceof Point(int x, int y)) { System.out.println("x = " + x + ", y = " ...