Vaadin’s Post

Building UI with Java? Yes, it’s possible. Today I explored Vaadin, a framework that allows developers to build modern web UIs entirely using Java. As someone who usually works with Java + Spring Boot, it was interesting to see how UI components can be created directly in Java without writing HTML, CSS, or JavaScript. As a small experiment, I built a simple User Management UI using Vaadin: • A form to enter Name and Email • An Add User button • A dynamic Grid table that displays the added users It was interesting to see how Java can handle both backend logic and UI components within the same ecosystem. While frameworks like React or Angular provide more flexibility for highly interactive frontend applications, Vaadin looks quite useful for enterprise dashboards and internal tools. Curious to know — has anyone here used Vaadin in production applications? Here’s the small UI I built 👇 #Java #Vaadin #SpringBoot #FullStackJava #WebDevelopment #Learning

I find TDD an excellent way of working, but there are times when one need to retrospectively implement tests for an existing code base in order to make further changes or maintenance possible. Achieving that with JSP had some intriguing challenges I wrote about in this DZone article. https://lnkd.in/da-_3gGe

Building modern landing pages with pure Java? Check out our new blog entry on Vaadin 25 + Tailwind CSS 4! In this post, we dive into: - Seamless Tailwind integration in Vaadin's 25.0.5 @apply feature - Hands-on example: crafting responsive landing pages with Java components and CSS utilities - Vite-powered builds for fast frontend development - Best practices for styling Vaadin views while keeping it production-ready Perfect for Java devs exploring modern web stacks without leaving your IDE. Repo included for quick experiments! Read it here: https://lnkd.in/eGR5zvBi #Vaadin25 #TailwindCSS #Java #Web #Vaadin #Gladtek #WebDevelopment

DAY 57/100 | Building Consistency 🏇 Showing up every day. Learning, growing, and improving. Ever wondered what pom.xml is used for in backend? 🤔 If you’ve worked on a Java #backend project, you’ve definitely seen this file sitting quietly in the root folder. That file belongs to Apache Maven — and it controls how your entire project is built. pom.xml (Project Object Model) is the backbone of dependency management in Java projects. Here’s what it actually does: 🔹 Defines your project details (name, version, packaging) 🔹 Manages dependencies like Spring Web, JPA, MySQL drivers 🔹 Controls build configuration 🔹 Uses plugins to compile, test, and run the application When working with Spring Boot, adding a dependency inside pom.xml automatically downloads and configures everything needed. No manual jar files. No messy setups. It’s not just a configuration file. It’s what makes large-scale backend development clean, scalable, and manageable. Understanding how Maven works changes how you look at backend architecture — it’s not only about writing APIs, but about structuring projects professionally. Going one level deeper every day. #Day56 #Java #SpringBoot #Maven #BackendDevelopment #SoftwareEngineering #LearningInPublic

Libraries vs Frameworks — Know the Difference 👇 When building software, choosing between a library and a framework can shape how your project evolves. While they’re often mentioned together, they play very different roles. 📘 Libraries Think of a library as a toolbox. You pick what you need, when you need it. It offers reusable functions to solve specific problems, but you stay in control of the application flow. Popular examples: • jQuery – Makes DOM manipulation and event handling easier • NumPy – Designed for high-performance numerical and matrix operations • React – Helps create interactive and reusable UI components ⚙️ Frameworks A framework is more like a blueprint. It defines the structure of your application and calls your code when needed. Instead of controlling the flow, you follow the framework’s rules and conventions. Well-known frameworks: • Angular – A full-fledged TypeScript framework for web apps • Django – A Python framework focused on speed, security, and scalability • Spring – A robust ecosystem for building Java applications ✨ Bottom line: Use a library when you want flexibility and control. Choose a framework when you want structure and faster development at scale. Picking the right one can save time, reduce complexity, and improve maintainability 🚀 #TechTalk #SoftwareDevelopment #Programming #Libraries #Frameworks #JavaScript #WebDevelopment #Coding #TechSkills #JSArrays

🛑 Is your Java IDE an Anchor? Why I Moved Spring Boot to VS Code ⚡ Let’s be honest: Starting Spring Tool Suite (STS) or a full IDE sometimes feels like launching a space shuttle. It’s powerful, but it's heavy. 🧱 If you’re juggling Spring Boot, Angular, and Node.js projects simultaneously, you don't need a 40GB monolith eating your RAM for breakfast. You need a fast, modular cockpit. Here is how I transformed VS Code into a professional-grade (and free!) Spring IDE: ✅ The Spring Boot Extension Pack: I get the Spring Initializr and the Spring Boot Dashboard in seconds. It handles my @Beans and @Autowired logic with zero lag. ✅ Capping the "Memory Leak": A quick tweak in settings.json ("java.jdt.ls.vmargs": "-Xmx1G") ensures the Java Language Server stays in its lane. No more fans spinning like a jet engine during a simple build. ✅ IntelliJ-ify Your Workflow: By using the IntelliJ-ify theme and Keybindings, I kept the "smart" feel of a premium IDE without the overhead. Shift + Shift to search? Works perfectly. ✅ Zero-Cost Professionalism: In 2026, you don't need a subscription to learn or build enterprise apps. VS Code gives you the "Industry Standard" experience for £0. The Reality Check: IntelliJ is the king of deep refactoring, but for Microservices and Cloud-Native dev? A lightweight, fast-loading editor is my secret weapon. Your Turn: Are you a "Full IDE" purist, or have you made the switch to a lightweight setup for Java? Let’s fight it out in the comments! 👇 Microsoft Visual Studio Code #SpringBoot #JavaDeveloper #VSCode #SoftwareEngineering #BackendDev #CodingSetup #DeveloperProductivity #Java17 #Microservices

🔹 C# vs TypeScript – Day 17: Generics How can we write reusable code without losing type safety? That’s where Generics come in. Generics allow you to: ✔ Write flexible code ✔ Preserve strong typing ✔ Avoid duplication --- 🟣 C# Generics C# generics are strongly enforced at compile time and runtime. Example: class Box<T> { public T Value { get; set; } } Usage: Box<int> intBox = new Box<int>(); intBox.Value = 10; Box<string> stringBox = new Box<string>(); stringBox.Value = "Hello"; The type is fixed when the object is created. --- 🔵 TypeScript Generics TypeScript generics are enforced at compile time only. Example: class Box<T> { value: T; } Usage: let intBox = new Box<number>(); intBox.value = 10; let stringBox = new Box<string>(); stringBox.value = "Hello"; After compilation, generics disappear (become JavaScript). --- ⚖️ Key Difference C# → Generics exist at runtime (CLR understands them) TypeScript → Generics exist only during compilation C# generics are reified. TypeScript generics are erased. --- 🧠 Mental Model Without generics → One box for each type. With generics → One smart box that adapts to type. Generics = Type-safe flexibility. --- ✅ Takeaway Both C# and TypeScript support generics for reusable type-safe code, but C# preserves them at runtime, while TypeScript removes them after compilation. — Part of my C# ↔ TypeScript comparison series. #DotNet #TypeScript #Angular #FullStack #LearningInPublic #SoftwareDevelopment

JavaScript looks simple… until someone asks: "When should you use var, let or const?" 🤔 Understanding this properly separates beginners from confident developers. 🔹 var – Function scoped – Can be reassigned & redeclared – Hoisted (initialized as undefined) – Old school way 🔹 let – Block scoped – Can be reassigned – Cannot be redeclared in same block – Hoisted but in Temporal Dead Zone – Modern best practice for changing values 🔹 const – Block scoped – Cannot be reassigned – Cannot be redeclared – Also in Temporal Dead Zone – Best practice by default 💡 Golden Rule: 👉 Prefer const by default 👉 Use let only when reassignment is needed 👉 Avoid var in modern JavaScript Strong fundamentals in JavaScript save you from hidden bugs and scope-related nightmares later. Which one do you use most in your projects? 👇 #JavaScript #WebDevelopment #FrontendDevelopment #NodeJS #Programming #CodingTips #FullStackDeveloper #LearnToCode #SoftwareEngineering #DeveloperLife

𝗧𝗼𝗽 𝗕𝗲𝗻𝗲𝗳𝗶𝘁𝘀 𝗢𝗳 𝗨𝘀𝗶𝗻𝗴 𝗧𝘆𝗽𝗲𝗦𝗰𝗿𝗶𝗽𝘁 TypeScript is a programming language that adds static type definitions to JavaScript. You get several benefits when you use TypeScript. Here are some of them: - Enhanced code quality and readability: types help you understand code intentions - Early detection of errors: TypeScript catches many errors at compile time - Rich IDE support and autocompletion: editors like VS Code provide better suggestions and error highlighting - Scalable application structure: TypeScript makes maintaining larger projects easier - Seamless integration with JavaScript: you can gradually adopt TypeScript in existing JavaScript codebases You can start using TypeScript by renaming your JavaScript files to .ts and adding types slowly. This helps you write safer and cleaner code. TypeScript is ideal for both small and large projects. Source: https://lnkd.in/gT_ftu-i