In Java, we use the final keyword to prevent some classes from being extended. Simply prefix a class header with final, as in final class Password.

The product of JEP 395, the record keyword, lets you create a POJO (plain old Java object) without manually adding getters, setters, toString, equals, and hashcode methods as you normally would.

The biggest language change packaged with the Java 10 release, aka JDK 18.3, was the introduction of the inferred type. This addition, combined with the ability to use the long reserved Java ‘var’ ...