Interested in Java functional programming? The first place you need to start, especially if you use the Streams API, is with this Java Function interface example.

Here’s an example of how a Function and lambda expression work together: Function<Integer, String> verboseLambda = (Integer x)-> { return Integer. toString (x*x); }; System.

In-Depth Role = Interface: A Merger of Concepts By Friedrich Steimann October 5, 2001 Interfaces are a prominent OO programming concept, since they allow the decoupling of specification and ...