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Log4j

Java library for logging
CreativeWork library_for_logging Q286923
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Log4j

Summary

Log4j is a library for logging[1]. Log4j has Wikipedia articles in 20 language editions, a strong signal of global cultural recognition.[2]

Key Facts

  • Log4j's instance of is recorded as library for logging[3].
  • Log4j's instance of is recorded as free software[4].
  • Log4j's instance of is recorded as Java software library[5].
  • Log4j's developer is recorded as Apache Software Foundation[6].
  • Log4j's developer is recorded as Ceki Gülcü[7].
  • Log4j's copyright license is recorded as Apache Software License 2.0[8].
  • Log4j's programmed in is recorded as Java[9].
  • Log4j's operating system is recorded as cross-platform[10].
  • Log4j's software version identifier is recorded as 2.0[11].
  • Log4j's software version identifier is recorded as 2.0.1[12].
  • Log4j's software version identifier is recorded as 2.0.2[13].
  • Log4j's software version identifier is recorded as 2.1[14].
  • Log4j's software version identifier is recorded as 2.2[15].
  • Log4j's software version identifier is recorded as 2.3[16].
  • Log4j's software version identifier is recorded as 2.4[17].
  • Log4j's software version identifier is recorded as 2.4.1[18].
  • Log4j's software version identifier is recorded as 2.5[19].
  • Log4j's software version identifier is recorded as 2.6[20].
  • Log4j's software version identifier is recorded as 2.6.1[21].
  • Log4j's software version identifier is recorded as 2.6.2[22].
  • Log4j's software version identifier is recorded as 2.7[23].
  • Log4j's software version identifier is recorded as 2.8[24].
  • Log4j's software version identifier is recorded as 2.8.1[25].
  • Log4j's software version identifier is recorded as 2.8.2[26].
  • Log4j's software version identifier is recorded as 2.9.0[27].

Body

Cultural Impact

Things named for Log4j include Log4Shell[28], a vulnerability[29].

Why It Matters

Log4j has Wikipedia articles in 20 language editions, a strong signal of global cultural recognition.[2]

Entities named for Log4j include Log4Shell[28], a vulnerability[29].

Related Entities

Ceki Gülcü cross-platform free software Java Java virtual machine

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  10. [12] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  11. [13] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  12. [14] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  13. [15] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  14. [16] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  15. [17] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  16. [18] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  17. [19] ↑ . logging.apache.org. Retrieved . logging.apache.org. Provenance: wikidata.org.
  18. [20] ↑ . logging.apache.org. Retrieved . logging.apache.org. Provenance: wikidata.org.
  19. [21] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  20. [22] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  21. [23] ↑ . logging.apache.org. Retrieved . logging.apache.org. Provenance: wikidata.org.
  22. [24] ↑ . logging.apache.org. Retrieved . logging.apache.org. Provenance: wikidata.org.
  23. [25] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  24. [26] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  25. [27] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [28] ↑ . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [29] ↑ . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikidata sitelinks. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Log4j. Retrieved May 3, 2026, from https://4ort.xyz/entity/log4j
MLA “Log4j.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/log4j.
BibTeX @misc{4ortxyz_log4j_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Log4j}}, year = {2026}, url = {https://4ort.xyz/entity/log4j}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Log4j — https://4ort.xyz/entity/log4j (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/log4j · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 2d ago · Github-wiki-bot bot · 2026-07-03 view diff on Wikidata ↗
    Software version identifier → 2.0, 2.0.1, 2.0.2 +54
    "/* wbeditentity-statements-single-property-update:1||2 */ [[Property:P348]], Update with GitHub data ([[:toollabs:editgroups/b/CB/cd53c7070a3c|details]])"
  2. 8w ago · Github-wiki-bot bot · 2026-05-07 view diff on Wikidata ↗
    Has use → logging
    Platform → Java virtual machine
    Developer → Apache Software Foundation, Ceki Gülcü
    Developer → —
    + 14 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-statements-single-property-update:1||2 */ [[Property:P348]], Update with GitHub data ([[:toollabs:editgroups/b/CB/7b725c736964|details]])"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.