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https://github.com/felipesalvadordev/functional_programming

Java functional programming implementations
https://github.com/felipesalvadordev/functional_programming

functional-programming functional-programming-in-java java

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Java functional programming implementations

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README 

        
# Functional Programming in Java with Examples  

Basically, functional programming is a style of writing computer programs (programming paradigm) that treat computations as evaluating mathematical functions.  

The basic objective of this style of programming is to make code more concise, less complex, more predictable, and easier to test compared to the legacy style of coding. 

Functional programming deals with certain key concepts such as pure function, immutable state, assignment-less programming etc.  

It emphasizes the use of pure functions that don't have side effects and always return the same output for a given input.



## Consumer

It represents a function which takes in one argument and produces a result. However these kind of functions don’t return any value.



## BiConsumer

It represents a function that takes in two arguments and produces a result. However, these kinds of functions doesn’t return any value.



## Function

Interface that takes two inputs 'T' and 'U' and produces an output of type 'R'.



## Function Composition

is a technique to combine multiple functions into a single function which uses the combined functions internally.



## BiFunction

It represents a function which takes in two arguments and produces a result and return it.



## BiPredicate

It operates on two objects and returns a predicate value based on that condition.



## Currying

Function Currying is a concept of breaking a function with many arguments into many functions with single argument in such a way, that the output is same. 

In other words, its a technique of simplifying a multi-valued argument function into single-valued argument multi-functions.



## Predicate

Represents a boolean-valued function that takes one argument and returns a boolean result



## Supplier

Interface is to defer the execution of some code.



## Runnable

Used to create a thread, starting the thread causes the object run method to be called in a separately executing thread.  

The general. contract of this run() method is that it may take any action whatsoever. It cannot return the result of computation.



## Callable

Used to encapsulate tasks supposed to be executed by another thread. It can return the result of the parallel processing of a task.



# References

https://www.baeldung.com/java-functional-programming  

https://www.geeksforgeeks.org/functional-programming-in-java-with-examples/