# amaembo/streamex

Enhancing Java Stream API

Repository: https://github.com/amaembo/streamex
Canonical: https://ross.abutalabs.com/products/streamex
Language: Java
License: Apache-2.0
License Family: permissive
Topics: java, java8, collections, streams-api
Last push: 2026-07-19T09:43:35+00:00

## Health v2 (maintenance only)
Score: 83/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 93, release rhythm 61, longevity 100
- inputs: {"age_days": 4163, "days_push": 45, "days_rel": 45, "gap_med": 335.5, "n_releases_24m": 3}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2290, forks 259 (observed 2026-08-28T04:06:34.900773+00:00)

## What it is
StreamEx is a Java library that enhances the Java 8 Stream API with additional stream classes like StreamEx, IntStreamEx, and EntryStream, plus extra collectors. It offers shorter, more convenient stream operations while remaining fully compatible with the standard JDK streams and parallel processing.

## Use cases
- simplify common Java stream operations with fewer lines of code
- group stream elements into a map with one-liner groupingBy
- join stream elements into a delimited string
- filter stream elements by type with select()
- prepend or append elements to an existing stream
- use streams as Iterables in for-each loops
- work with map entry streams more conveniently

## When to choose
- you write lots of Java 8+ stream code and want more concise, expressive operations
- you need extra collectors and stream helpers without leaving the JDK Stream API
- you want a lightweight dependency with minimal performance overhead and parallel-stream friendliness

## When to avoid
- your project is limited to Java versions or environments where adding dependencies is restricted
- you only use streams occasionally and standard JDK API suffices
- you need reactive or async stream processing rather than JDK-style streams

## Facets
- artifact type: library
- maturity: stable
- function: developer-tools
- domain: developer-tools, programming-languages
- platform: jvm
- tags: java-streams, collections, java8, functional-programming

## Member repositories
- amaembo/streamex (main) score 83

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:34.900773+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:40:41.734802+00:00, confidence not recorded.
  - readme: https://github.com/amaembo/streamex (fetched 2026-08-28T04:06:34.900773+00:00, sha 5076200b87f8)
- Data as of 2026-08-30T08:39:29.467469+00:00.