Currying Functions in Java

single-valued argument multi-functions.

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.

Example 1: Adding 2 numbers using Function Currying

// Java Program to demonstrate Function Currying 

import java.util.function.Function; 

public class GFG { 

public static void main(String args[]) 

{ 

// Using Java 8 Functions 

// to create lambda expressions for functions 

// and with this, applying Function Currying 

// Curried Function for Adding u & v 

Function<Integer, 

Function<Integer, Integer> > 

curryAdder = u -> v -> u + v; 

// Calling the curried functions 

// Calling Curried Function for Adding u & v 

System.out.println("Add 2, 3 :"

+ curryAdder 

.apply(2) 

.apply(3)); 

} 

} 

Output::

Add 2, 3 :5