Welcome to the ultimate Java 21 Tutorials hub! Whether you’re a beginner or an experienced developer, these tutorials will help you explore Java 21’s powerful new features — like virtual threads, pattern matching, string templates, and more — in a simple and practical way. Start coding smarter, faster, and with more confidence using the latest from the Java platform.
A complete Java 21 tutorial covering new features like virtual threads, record patterns, sequenced collections, and more. Start coding with Java 21 today!
🚀 Getting Started with Java 21
- What’s New in Java 21: A Beginner’s Overview
- Setting Up Your Java 21 Development Environment (JDK, IDE, Maven/Gradle)
- Hello Java 21: Your First Program and How It Works
- How Java Has Evolved: Java 8 to Java 21 Evolution
🧱 Core Java Concepts (Refreshed for Java 21)
- Records in Java: Simpler POJOs for Modern Java
- Pattern Matching in Java 21: Cleaner Code with
instanceofandswitch - Understanding Java’s New
String Templates(Preview Feature) - Sequenced Collections: Say Goodbye to Manual Ordering
💡 Project Loom & Virtual Threads
- Introduction to Virtual Threads: Java 21’s Game-Changer for Concurrency
- Migrating Existing Code to Virtual Threads: Pros and Pitfalls
- Structured Concurrency in Java 21 Explained with Examples
🔁 Hands-On and Practice-Oriented
- 10 Java 21 Coding Challenges to Improve Your Skills
- Build a Simple REST API with Java 21 and Spring Boot
- Using Java 21 with VS Code: A Lightweight Workflow
- Refactor Old Java Code to Use Java 21 Features
🧪 Testing & Debugging
🧠 Conceptual & Architectural
- Should You Upgrade to Java 21 in Production?
- Java 21 and the Future of Reactive Programming
- How Java 21 Enhances Developer Productivity: A Deep Dive
Please do go through all the content and let us know for any suggestion on Java 21 tutorials.
Reference : Java 21 Docs