Method references: A primer. My previous Java 101 tutorial introduced lambda expressions, which are used to define anonymous methods that can then be treated as instances of a functional interface.

Simple method delegation: Use method references for straightforward delegations that don’t require modifying or processing arguments.For example, list.forEach(System.out::println) is clearer ...

Implementation of the UnaryOperator example. To show you an old school, pre-Java 8 UnaryOperator example, we will create a single class named UnaryOperatorExample and provide the required apply method ...

The convention for packages is different from the Java naming conventions used for variables, methods and reference types. Packages are always written in lowercase letters, with a dot between words. A ...