In this concise eBook, I've meticulously crafted easy-to-understand explanations and examples of the exciting features introduced in Java 21. Whether you're a beginner or looking to refresh your knowledge, this guide is designed to help you grasp Java 21 concepts in the shortest time possible.

Key Features Covered:

• Virtual Threads: Simplify concurrency with lightweight threads.
• Structured Concurrency: Manage asynchronous tasks effectively.
• Sequenced Collection: Maintain order in collections.
• String Template: Create dynamic strings easily.
• StringBuffer/StringBuilder Enhancements: Boost performance for mutable strings.
• Pattern Matching: Simplify complex data type handling.
• Switch Statement Enhancements: Streamline control flow.
• Record Class Enhancements: Improve usability of record classes.
• Sealed Classes and Interfaces: Control class hierarchies effectively.

Embark on your journey to mastering Java 21 with this quick and accessible guide!