Java Functional Programming

8.2

8.0

Javaslang

8.1

4.1

Functional Java

6.6

3.7

jOOλ

6.2

7.8

StreamEx

5.8

8.6

cyclops-react

4.9

8.8

12 Functional Programming libraries and projects

Javaslang

8.2 8.0 L3 Java

Functional component library that provides persistent data types and functional control structures.
Functional Java

8.1 4.1 L5 Java

Implements numerous basic and advanced programming abstractions that assist composition-oriented development.
jOOλ

6.6 3.7 L2 Java

Extension to Java 8 which aims to fix gaps in lambda, providing numerous missing types and a rich set of sequential Stream API additions.
StreamEx

6.2 7.8 L3 Java

Enhancing Java 8 Streams.
cyclops-react

5.8 8.6 L3 Java

Monad and stream utilities, comprehensions, pattern matching, functional extensions for all JDK collections, future streams, trampolines and much more.
λ

4.9 8.8 Java

functional-programming, lenses, lambda, functor, monad, semigroup, monoid, coproduct, heterogeneous-maps, profunctors, bifunctors, either, traversable, try-monad, algebraic-data-types, tuples, hlist, maybe-monad, optics
derive4j

4.4 6.3 L4 Java

Java 8 annotation processor and framework for deriving algebraic data types constructors, pattern-matching, morphisms.
protonpack

4.3 0.0 L5 Java

Collection of stream utilities.
underscore-java

3.8 8.6 L1 Java

java port of Underscore.js
Fugue

2.7 -

Functional extensions to Guava.
Faux Pas

2.7 7.3 L5 Java

Library that simplifies error handling by circumventing the issue that none of the functional interfaces in the Java Runtime is allowed by default to throw checked exceptions.
Vavr

- -

Functional component library that provides persistent data types and functional control structures.

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