The two most popular and fully-featured Java JSON libraries according to Maven Repository are:

  • GSON (2.4)
  • Jackson (2.6)

and jars for both are accessible via Maven:

  • Gson requires gson-2.4.jar (group id com.google.code.gson, artifact id gson
  • Jackson requires jackson-databind-2.6.2.jar (group id com.fasterxml.jackson.core, artifact jackson-databind), as well as 2 supporting jars (jackson-core for streaming parser, jackson-annotations for annotation suport)

Jars that you listed are for other lesser commonly used packages (one for json-lib, http://json-lib.sourceforge.net/ is pretty old; other I don't even know what it is), so I would not recommend you use them.

Answer from StaxMan on Stack Overflow
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Maven Repository
mvnrepository.com › artifact › org.json › json › 20140107
Maven Repository: org.json » json » 20140107
January 7, 2014 - HomePage https://github.com/douglascrockford/JSON-java 🔍 Inspect URL · Links · DateJan 07, 2014 · Filespom (4 KB)jar (63 KB)View All · RepositoriesCentralAppodealCloudera PubGluu OXHortonworksKaluzaKnetminerKyligence PublicMulesoftTalend PublicUnvusWSO2 PublicXceptance+10 more ·
Published   Jan 07, 2014
Version   20140107
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GitHub
github.com › stleary › JSON-java
GitHub - stleary/JSON-java: A reference implementation of a JSON package in Java. · GitHub
JSON is a light-weight language-independent data interchange format. The JSON-Java package is a reference implementation that demonstrates how to parse JSON documents into Java objects and how to generate new JSON documents from the Java classes.
Starred by 4.7K users
Forked by 2.6K users
Languages   Java
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SourceForge
sourceforge.net › projects › json-java.mirror
JSON-java download | SourceForge.net
December 24, 2025 - Download JSON-java for free. A reference implementation of a JSON package in Java. JSON is a light-weight language-independent data interchange format. The JSON-Java package is a reference implementation that demonstrates how to parse JSON documents ...
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Maven Repository
mvnrepository.com › artifact › org.json › json
Maven Repository: org.json » json
December 24, 2025 - JSON is a light-weight, language independent, data interchange format. See http://www.JSON.org/ The files in this package implement JSON encoders/decoders in Java. It also includes the capability to convert between JSON and XML, HTTP headers, Cookies, and CDL.
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Jar-Download
jar-download.com › home › org.json
Download org.json JAR files with all dependencies
Download org.json JAR files ✓ With dependencies ✓ Documentation ✓ Source code
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TutorialsPoint
tutorialspoint.com › org_json › org_json_quick_guide.htm
Org.Json - Quick Guide
At the time of writing this tutorial, we have downloaded json-20250517.jar, and copied it into C:\>JSON folder. Set the JSON_JAVA environment variable to point to the base directory location where org.json jar is stored on your machine.
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SourceForge
sourceforge.net › projects › json-lib
Json-lib download | SourceForge.net
Development of this library has been moved to https://github.com/kordamp/json-lib/ Json-lib is a java library for transforming beans, maps, collections, java arrays and XML to JSON and back again to beans and DynaBeans. It is based on the work by Douglas Crockford in http://www.json.org/java.
Find elsewhere
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Maven Central
repo1.maven.org › maven2 › org › json › json › 20230227
Central Repository: org/json/json/20230227
../ json-20230227-javadoc.jar 2023-02-27 13:38 185665 json-20230227-javadoc.jar.asc 2023-02-27 13:38 659 json-20230227-javadoc.jar.md5 2023-02-27 13:38 32 json-20230227-javadoc.jar.sha1 2023-02-27 13:38 40 json-20230227-sources.jar 2023-02-27 13:38 70293 json-20230227-sources.jar.asc 2023-02-27 ...
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Oracle
download.oracle.com › otndocs › jcp › json_p-1_1-final-spec › index.html
JSR-000374 Java API for JSON Processing 1.1 Specification Final Release
Download Instruction: Click the product name or the file name to start the download · If you need assistance with downloads, please contact the JCP PMO. For all other JCP related questions, please see our Frequently Asked Questions (FAQ)
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Java2s
java2s.com › Code › Jar › j › Downloadjavajsonjar.htm
java json - Jar File Download
December 23, 2025 - java2s.com | Email: | © Demo Source and Support. All rights reserved
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Maven Central
central.sonatype.com › artifact › org.json › json
org.json:json - Maven Central
JSON is a light-weight, language independent, data interchange format. See http://www.JSON.org/ The files in this package implement JSON encoders/decoders in Java. It also includes the capability to convert between JSON and XML, HTTP headers, Cookies, and CDL.
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Google Code
code.google.com › archive › p › org-json-java › downloads
Google Code Archive - Long-term storage for Google Code Project Hosting.
Archive · Skip to content · The Google Code Archive requires JavaScript to be enabled in your browser · Google · About Google · Privacy · Terms
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Maven Repository
mvnrepository.com › open-source › json-libraries
Maven Repository: JSON Libraries
JSON parsing, generation, and serialization libraries for working with JSON data. ... Gson is a Java library that can be used to convert Java Objects into their JSON representation.
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Maven Central
repo1.maven.org › maven2 › org › json › json › 20210307
Central Repository: org/json/json/20210307
../ json-20210307-javadoc.jar 2021-03-08 03:55 175322 json-20210307-javadoc.jar.asc 2021-03-08 03:55 473 json-20210307-javadoc.jar.asc.md5 2021-03-08 03:55 32 json-20210307-javadoc.jar.asc.sha1 2021-03-08 03:55 40 json-20210307-javadoc.jar.md5 2021-03-08 03:55 32 json-20210307-javadoc.jar.sha1 2021-03-08 03:55 40 json-20210307-sources.jar 2021-03-08 03:55 79365 json-20210307-sources.jar.asc 2021-03-08 03:55 473 json-20210307-sources.jar.asc.md5 2021-03-08 03:55 32 json-20210307-sources.jar.asc.sha1 2021-03-08 03:55 40 json-20210307-sources.jar.md5 2021-03-08 03:55 32 json-20210307-sources.jar.
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Open Liberty
openliberty.io › docs › latest › reference › javadoc › api › json-1.0.com.ibm.json.java.html
Package com.ibm.json.java
Open Liberty documentation and reference materials for developers to build applications and for administrators and operation teams to manage DevOps and deploy workloads to clouds by using open cloud-native Java. This content covers Open Liberty basics, development, security, deployment, and ...
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Google Groups
groups.google.com › g › comp.lang.java.help › c › 8rKxFs5CFAI
where to download org.json package...
<http://www.json.org/java/json.zip> <http://www.json.org/java/org.json.me.zip> <http://json-lib.sourceforge.net/> <http://developer.berlios.de/projects/jsontools/>
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Jar-download
jar-download.com
Download java.json JAR files with all dependencies
Download JAR files for java.json ✓ With dependencies ✓ Documentation ✓ Source code