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 Java assert and backward compatibility Although the assert keyword was introduced in Java 1.4, code written prior to the February 2002 release was still backward-compatible. The exception to that ...

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’ ...