# datafaker-net/datafaker

Generating fake data for the JVM (Java, Kotlin, Groovy) has never been easier!

Repository: https://github.com/datafaker-net/datafaker
Canonical: https://ross.abutalabs.com/products/datafaker
Homepage: https://www.datafaker.net
Language: Java
License: Apache-2.0
License Family: permissive
Topics: testing, faker
Last push: 2026-08-20T21:39:07+00:00

## Health v2 (maintenance only)
Score: 91/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 98, release rhythm 78, longevity 100
- inputs: {"age_days": 1708, "days_push": 13, "days_rel": 70, "gap_med": 67.0, "n_releases_24m": 11}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1791, forks 240 (observed 2026-08-28T04:05:37.021423+00:00)

## What it is
Datafaker is a JVM library for generating fake data in Java, Kotlin, and Groovy, offering 250+ data providers covering names, addresses, dates, finance, and more. It is a modern, actively maintained fork of java-faker supporting locales, seeds, custom providers, and collections/streams of generated values.

## Use cases
- generate fake test data for unit tests
- seed a database with realistic sample data
- anonymize production data for development
- create demo data for a showcase app
- generate random names and addresses in Java
- produce repeatable fake data with a fixed seed
- generate test passwords with symbol rules

## When to choose
- you need fake data in Java, Kotlin, or Groovy on the JVM
- you want a maintained alternative to java-faker with many providers
- you need locale-specific fake data or reproducible seeded generation

## When to avoid
- you work outside the JVM (use Faker.js, Python faker, or PHP faker instead)
- you need real, valid production data rather than synthetic data
- you require Java 8 support without using the unmaintained 1.x line

## Facets
- artifact type: library
- maturity: active
- function: testing, data-generation, mocking
- domain: developer-tools, testing, data-science
- platform: jvm, cross-platform
- tags: fake-data, faker, test-data, java, kotlin, groovy, data-anonymization

## Member repositories
- datafaker-net/datafaker (main) score 91

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:37.021423+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 2026-08-30T03:23:04.718256+00:00, confidence not recorded.
  - readme: https://github.com/datafaker-net/datafaker (fetched 2026-08-28T04:05:37.021423+00:00, sha b4f33825e1f5)
  - homepage: https://www.datafaker.net (fetched 2026-08-29T11:02:04.687316+00:00, sha 34dbe628ecc7)
  - site_page: https://www.datafaker.net/documentation/getting-started (fetched 2026-08-29T11:02:04.696238+00:00, sha 03d942702c93)
  - site_page: https://www.datafaker.net/documentation/usage (fetched 2026-08-29T11:02:04.700786+00:00, sha 1cc71d02bdce)
  - site_page: https://www.datafaker.net/documentation/providers (fetched 2026-08-29T11:02:04.703365+00:00, sha 1b47e530c219)
  - site_page: https://www.datafaker.net/documentation/custom-providers (fetched 2026-08-29T11:02:04.706311+00:00, sha 2843e0d3a2d0)
  - site_page: https://www.datafaker.net/documentation/sequences (fetched 2026-08-29T11:02:04.708343+00:00, sha 74e847d723de)
  - site_page: https://www.datafaker.net/documentation/date-format (fetched 2026-08-29T11:02:04.710193+00:00, sha 425f0dc56507)
  - site_page: https://www.datafaker.net/documentation/password (fetched 2026-08-29T11:02:04.712010+00:00, sha e18c62c0ab7b)
  - site_page: https://www.datafaker.net/releases/2.7.0 (fetched 2026-08-29T11:02:04.698354+00:00, sha ff22c40e156f)
- Data as of 2026-08-30T08:39:29.467469+00:00.