What new features were added in the latest Java 21 version?

Java 21 includes several important new features and improvements, among which:

• Record Patterns and Pattern Matching for switch — an extension of pattern matching capabilities that simplifies working with data and conditions.
• Virtual Threads (Preview) — lightweight threads that significantly simplify writing multithreaded code and improve performance.
• Structured Concurrency (Preview) — simplifies thread and task management, making code more readable and reliable.
• Sequenced Collections — new interfaces and implementations of collections that preserve element order.

These innovations aim to enhance development convenience, performance, and code readability. For precise details and a complete list, it is recommended to refer to the official Java 21 release notes.