Yeah, when Java 8 introduced the Function interface I started to program this way as well. I get push back some times from the those not initiated to the functi

Yeah, when Java 8 introduced the Function interface I started to program this way as well. I get push back some times from the those not initiated to the functional style because I have a ton of little function that do one thing. Unfortunately in Java this means a bunch of class files. The other thing I noticed when I started using this style is that I was able to ditch unit testing mocking frameworks. This made me realize, when the Function interface was introduce it was a backdoor way to get folks back to coding to an interface, which we should have been doing all along.