From Java 8 onwards, many functional programming elements are introduced like lambda expression, functional interfaces in Java. These elements are to ease functional programming in Java which was originally a imperative and Object Oriented language.
This tutorial is designed for Software Professionals who are willing to learn Functional Programming using Java in simple and easy steps. This tutorial will give you an understanding of the Functional Programming concepts and after completing this tutorial you will be at an intermediate level of expertise from where you can take yourself to a higher level of expertise.
Before proceeding with this tutorial, you should have a basic understanding of Java, and execution of programs, etc.