Functional Interface In Java Examples Java 8 Core Java java by devs5003 - April 26, 2021March 1, 20243 Functional Interface in Java has become available for us since the introduction of new features in Java 8. Needless to say, how important functional Interfaces are in Java. If we start learning the most popular feature of Java 8: 'The Lambda Expression', we should at least know the basics of Functional Interfaces. However, you will get more than basics from this article. Moreover, they also promote functional programming in Java. Without functional Interface in Java, you can't imagine to write a code of Lambda Expression and Method References. In fact, introduction of default & static methods inside an interface in Java 8 itself has completely changed the definition of Interfaces in Java. Let's discuss our topic 'Functional Interface in Java' and