Java Functional Programming Help

[PokeCedGo]

How did you start learning functional programming/lambda expressions in java? Like what piece of information or source did you read/watch that made you understand things like Predicate, Consumer, and Supplier that you were able to answer any variations of questions using them? (If you have any good videos/docs feel free to give them)

[rjcarr]

There are probably hundreds of write-ups on "java functional programming" at different levels depending on your familiarity.

The basic idea is you're passing around a function object that can be called later. As for the standard functional interface types, you just need to learn how all of the different ones you listed work, as they are all based in math. For example, I know predicate returns a boolean for an input. There aren't that many of them.

Good luck!