Lambdas and the Function interface The goal of the Function interface is to take a value from the program, perform some type of calculation or operation on that value and then return a new value. Here ...

In this Java 101 tutorial, I’ve explained how interfaces differ from classes, and showed you how to declare, implement, and extend interfaces in your Java programs.

A great deal of Java programming -- from conditional statements to iterative loops -- deals with the evaluation of true or false values. When you work with the JDK's Streams API and Lambda functions, ...

Create packages, import packaged classes and interfaces into your programs, move packages, and encapsulate them in jar files.

Java is one of the most in-demand programming languages in the world and one of the two official programming languages used in Android development (the other being Kotlin). Developers familiar ...