Method references in Java are part of the broader set of features introduced and enhanced in Java 8 and beyond. They are a concise way to refer to methods of classes or objects.

Java’s main function Java’s main function Java’s main method is composed of six terms — three reserved words, the main method name, a reference type and a variable name: public – Java’s main function ...

It's not very restrictive. However, rules are different from conventions. Java naming conventions for variables, methods and reference types are where things get a little more complicated. For example ...