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’ ...

Goetz spoke to InfoQ about these proposed hyphenated keywords: InfoQ: What has been the community response for hyphenated keywords in the Java language?

Use Java's extends keyword to derive a child class from a parent class, invoke parent class constructors and methods, override methods, and more.