🚀 Java DOM Parser – Overview Java DOM Parser is an API used to parse XML documents by creating a structured DOM tree, enabling developers to access and manipulate the content, structure, and style of XML data efficiently. It follows the standards defined by the W3C (World Wide Web Consortium). This module explains when to use a DOM parser—especially when detailed access to the document structure is required, when elements need to be modified or rearranged, or when data needs to be reused multiple times (page 1). As highlighted on page 2, parsing results in a complete tree structure of the XML document, making it easy to navigate and manipulate. The DOM parser offers advantages like simplicity and flexibility, but also has limitations such as higher memory consumption and inefficiency for large documents. The document also covers commonly used DOM interfaces and methods (pages 3–4), which help in accessing elements, attributes, and node data programmatically. 💡 A fundamental concept for Java developers working with XML processing and data manipulation. #Java #DOMParser #XML #Programming #AshokIT

Java keeps evolving: understanding the difference between versions Java is no longer just “Java 8”! Each new version brings features that simplify code, improve performance, and enhance security. Here’s a quick overview: 🔹 Java 8 (2014) Introduced lambdas and the Stream API → more concise and functional code. Optional to handle null values safely. New date and time API (java.time). 🔹 Java 9 Module system (Jigsaw) for modular applications. Improved collection APIs. JShell: a REPL for quick code testing. 🔹 Java 11 (LTS – 2018) Long-term support version. Convenient String methods (isBlank, lines, repeat). Standardized HTTP Client. Removal of deprecated modules and features. 🔹 Java 17 (LTS – 2021) Pattern matching for instanceof. Sealed classes to control inheritance. Stream and Collection API improvements. 🔹 Java 21 (2023) Improved Records and Pattern Matching. Virtual Threads (Project Loom) → better concurrency and performance. Overall performance improvements and modern APIs for current development needs. Why keep up with Java versions? Enhanced security Optimized performance Modern syntax and less boilerplate As a full-stack developer, staying updated with Java versions allows you to build applications that are faster, cleaner, and more secure. Which Java version are you using in your projects today? #Java #Development #LTS #FullStack #CodingTips #Innovation

One thing I like about Java is that the biggest progress is often not dramatic enough for social media. There is no single “magic” feature between Java 21 and 25 that changes everything overnight. What you get instead is something more valuable: a better platform. Between Java 21 and 25, Java added: ✅ Scoped Values, ✅ Structured Concurrency, ✅ Foreign Function & Memory API, ✅ Stream Gatherers, ✅ Class-File API, ✅ Compact Object Headers, ✅ Generational Shenandoah, ✅ more startup and profiling work, ✅ better JFR, ✅ and... cleaner syntax with unnamed variables and patterns, module import declarations, and more flexible constructor bodies. That is why I liked Frank Delporte’s video on the move from Java 21 to 25. It looks at Java the way real teams should look at it: not as isolated release notes, but as accumulated engineering progress between LTS versions. Too many people ignore the non-LTS releases and then act surprised when the next LTS contains a lot of change. Worth watching if you want a practical summary without drowning in JEP numbers. ➡️ https://lnkd.in/dnqmDUnj Are you on Java 25 yet?

Thanks, Daniel Witkowski, for sharing this episode of the Friends of OpenJDK (Foojay.io) podcast about the changes between Java 21 and 25. And to Jakob Jenkov, Jonathan Vila López, Ryan Svihla, Mary Grygleski, 👓 Anton Arhipov, Ronald Dehuysser, and Jonathan Ellis, who took the time to share their point of view!

You have written thousands of Java objects. You have never actually seen one. Not the real thing — the bytes sitting on the heap, the hidden 12-byte header every object carries before a single field is stored, the padding the JVM adds without asking. Java 25 just made that header smaller for the first time in 13 years. I ran JOL (Java Object Layout) on the same Point(int x, int y) record on Java 21 and Java 25. Here is what came back: Java 21 → 24 bytes Java 25 → 16 bytes At 1 million objects that is 8 MB freed. At the allocation rates of a typical Spring Boot service, that is measurable GC pressure gone. The article walks through the actual JOL output byte by byte — the header tax, how it works, why it took 13 years to fix, and what it means if you are running services on AWS or Kubernetes. #Java #Java25 #JVM #SpringBoot #BackendDevelopment #SoftwareEngineering #Performance

Java 17 Made DTOs Simpler, Cleaner and Better 👉 From Boilerplate Classes to concise records When to use Records: Use records when your class is mainly a data carrier (DTO): "I only need to store and transfer data, not modify it" When you create a record, Java gives you: 1. Fields (implicitly final) 2. Public Constructor 3.  Getter Methods (NO get prefix) 4.Built-in Methods 👉 equals() 👉 hashCode() 👉 toString() 5. Immutability (BIG advantage 🔥) No accidental changes Thread-safe by default Avoid records if your class needs: ❌ Setters / mutability ❌ Lazy loading ❌ Complex validation logic ❌ JPA Entity (⚠️ not recommended)

Stop ignoring Java updates. Modern Java is a game-changer for performance and productivity. Staying current isn't just about security; it's about competitive advantage. Many teams remain on older Java versions, missing out on significant language improvements, JVM optimizations, and new APIs. Modern releases like Java 17+ offer substantial performance gains and developer quality-of-life features that directly impact productivity. It's time to re-evaluate your upgrade strategy beyond just security patches. The incremental releases since Java 8 have brought an incredible suite of features that streamline development and boost runtime efficiency: - Record classes drastically simplify immutable data carriers and reduce boilerplate code. - Pattern Matching for instanceof enhances code readability and reduces casting verbosity. - Text Blocks provide a cleaner syntax for multi-line strings, improving code clarity. - Virtual Threads

Java 8 changed Interfaces forever. Before Java 8, an interface was simple: 👉 Only abstract methods 👉 Only rules, no implementation But Java 8 said… “Let’s upgrade this.” ⚡ What changed in Java 8? Interfaces started doing more than just defining rules. They can now include: ✔ Default Methods → provide implementation inside interface ✔ Static Methods → utility methods within interface ✔ Functional Interfaces → foundation for lambda expressions Why this matters? Earlier problem: 👉 If you add a new method to an interface → All implementing classes break Now with default methods: 👉 You can extend interfaces → Without breaking existing code Real Impact: Cleaner code with lambda expressions Better backward compatibility More flexible and scalable design Interfaces are no longer passive… 👉 They are active design components 📂 Want to see code? Check out my implementation 👇 🔗 https://lnkd.in/gMbX3etx Java 8 vs Java 1.8 👉 Both refer to the same version 👉 “1.8” is internal version naming 👉 “Java 8” is official & widely used #Java #Java8 #Interface #FunctionalInterface #Lambda #Programming #OOP #DeveloperLife #CodingJourney #LearnJava

☕ Java 27 — JEP 527: Post-quantum TLS 1.3 hybrid key exchange SSLSocket socket = ( SSLSocket ) SSLContext.getDefault() .getSocketFactory() .createSocket(); SSLParameters params = socket.getSSLParameters(); params.setNamedGroups( new String[]{ "SecP256r1MLKEM768", "X25519MLKEM768", "secp256r1", "x25519" } ); socket.setSSLParameters( params ); • Java 27 adds hybrid post-quantum key exchange options to TLS 1.3. • The important message for developers is that javax.net.ssl users benefit by default, even without code changes. • This is the “quantum” feature worth talking about because it changes how teams think about long-term confidentiality. #java #java27 #jdk27 #tls13 #quantum #postquantum Go further with Java certification: Java👇 https://bit.ly/javaOCP Spring👇 https://bit.ly/2v7222 SpringBook👇 https://bit.ly/springtify JavaBook👇 https://bit.ly/jroadmap

Want to create a Java object? You need a Constructor. A Constructor is the very first function that runs when an object is born. One simple line of code and your object is ready. If Java concepts confuse you, start here. This explanation makes it all make sense!