JSONObject ClassNotFoundException

I am working in IntelliJ and using Maven. I have a class that uses JSONObject:

import org.json.JSONObject;
try { JSONObject documentObj = new JSONObject(document);
} catch (Exception e) { throw new RuntimeException("Failed to convert JSON String to JSON Object.", e);
}

Maven dependency in the pom.xml file:

<dependency> <groupId>org.json</groupId> <artifactId>json</artifactId> <version>20090211</version>
</dependency>

I can do a mvn clean package and builds successfully. But when I try to run it, I get:

Error: java.lang.ClassNotFoundException: org.json.JSONObject

Is there anything else I'm missing here? Thanks!

4 Answers

Add json jar to your classpath

or use java -classpath json.jar ClassName

Or add this to your maven pom.xml depedencies:

<dependency> <groupId>org.json</groupId> <artifactId>json</artifactId> <version>20090211</version>
</dependency>

As of today (15th July 2020), you need to use latest maven repository as per below:

<dependency> <groupId>org.json</groupId> <artifactId>json</artifactId> <version>20200518</version>
</dependency>

For any new version in the future, you can check it here:

Then simply replace 20200518 with latest new version value.

Using the latest maven dependency solved the issue for me

<dependency> <groupId>org.json</groupId> <artifactId>json</artifactId> <version>20171018</version>
</dependency>

Originally I was using net.sf.json-lib but it was creating issues with JSONArray whenever I try to use .put() method

Following solved my issue:

<dependency> <groupId>org.json</groupId> <artifactId>json</artifactId> <version>LATEST</version>
</dependency>

Although I am not big fan of using LATEST but since its a numeric version number, instead of more understndable versioning, so I found this one working for me.