# RichardWarburton/java-8-lambdas-exercises

Exercises and Answers for Java 8 Lambdas book

Repository: https://github.com/RichardWarburton/java-8-lambdas-exercises
Canonical: https://ross.abutalabs.com/products/java-8-lambdas-exercises
Language: Java
License: MIT
License Family: permissive
Last push: 2023-10-27T01:31:55+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4588, "days_push": 1042, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1832, forks 1237 (observed 2026-08-28T04:05:42.324344+00:00)

## What it is
Companion exercise repository for the O'Reilly book 'Java 8 Lambdas' by Richard Warburton. It contains coding exercises presented as failing tests, their answers, and code examples organized by book chapter.

## Use cases
- practice java 8 lambda exercises
- learn java streams and functional programming
- find answers to java 8 lambdas book questions
- work through failing tests to learn lambdas
- study java 8 code examples by chapter

## When to choose
- you are reading the Java 8 Lambdas book and want hands-on practice
- you want test-driven exercises for learning lambda expressions and streams

## When to avoid
- you need a production library for functional programming in Java
- you want a general Java tutorial not tied to the book
- you need Java versions beyond 8 features

## Facets
- artifact type: learning-resource
- maturity: maintenance
- function: testing, developer-tools
- domain: programming-languages, tutorials, education
- platform: jvm, cross-platform
- tags: java-8, lambdas, exercises, book-companion, streams, functional-programming

## Member repositories
- RichardWarburton/java-8-lambdas-exercises (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:42.324344+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 2026-08-30T03:18:41.216700+00:00, confidence not recorded.
  - readme: https://github.com/RichardWarburton/java-8-lambdas-exercises (fetched 2026-08-28T04:05:42.324344+00:00, sha 2b05ff957e20)
- Data as of 2026-08-30T08:39:29.467469+00:00.