However, Java refers to class libraries as packages. This article explores packages; I show you how to create packages of classes and interfaces, how to import (that is, bring into a program ...

This example will show you four different ways to implement this functional interface in your code — starting with how to use an actual class, and how to create very concise code with a lambda ...

This is where Java’s functional Consumer interface comes in handy. According to the JavaDoc, the Consumer interface accepts any type of object as input. The java.util.function.Consumer class has one ...