New Features that came with Java 21

Sources: https://www.baeldung.com/java-lts-21-new-features

1.) Record Patterns Record Patterns are like simplified CLasses. Predefined methods; itsselt and its variables are immutable (final);

2.) Pattern Matching Swith-cases without the use of "instanceof"

3.) String literal You can define and let variables replace in Strings. It will be used in Java 22 Templates Preview even further.

4.) Virtual Threads Threads that are completely managed by the Java VM and not by the OS. It is way more flexible for the java programm than letting the OS manage the threads.

5.) Sequenced Collections Lists with exact order and methods, that you can use to get for example the last and first one.

6.) Key Encapsulation Mechanism Api It can be used to send a public key for example.