JSONObject ClassNotFoundException

Question

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!

Did you checked that jar is in your classpath or in the war file ? — NullPointerException, Apr 11 '13 at 14:15
I have my project in intelliJ, and I run it using a bash script from the command line in linux. — kimmii12, Apr 17 '13 at 20:33
Alright, I got it--y'all were right, I didn't have it in my classpath. There were two variables set in the bash script: LIBJARS, the jars required by the job, and the CLASSPATH. I set it in the CLASSPATH, but in fact it was needed in the LIBJARS variable.... the joys of taking over others' code. :) Thanks for your help! — kimmii12, Apr 17 '13 at 20:53

Alya'a Gamal · Accepted Answer · 2013-04-11T14:25:27.663

39

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>

edited Apr 11 '13 at 14:25

answered Apr 11 '13 at 14:18

Alya'a Gamal

5,624
19
34

Alright, I got it--y'all were right, I didn't have it in my classpath. There were two variables set in the bash script: LIBJARS, the jars required by the job, and the CLASSPATH. I set it in the CLASSPATH, but in fact it was needed in the LIBJARS variable.... the joys of taking over others' code. :) Thanks for your help! – kimmii12 Apr 17 '13 at 20:53
This is the latest dependency & it don't seems to have "import org.json.JSONObject;". Could you please guide ASAP? com.google.code.gson gson 2.3.1 – PAA May 01 '15 at 11:09

score 10 · Answer 2 · edited Aug 22 '20 at 03:21

10

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:

https://mvnrepository.com/artifact/org.json/json

Then simply replace 20200518 with latest new version value.

edited Aug 22 '20 at 03:21

ℛɑƒæĿᴿᴹᴿ

4,983
4
38
58

answered Jul 15 '20 at 08:11

Jerry Chong

7,954
4
45
40

score 5 · Answer 3 · answered Jan 24 '18 at 10:20

5

Using the latest maven dependency solved the issue for me

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

answered Jan 24 '18 at 10:20

Akhil Jain

13,872
15
57
93

score 2 · Answer 4 · answered Nov 07 '21 at 17:25

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.

JSONObject ClassNotFoundException

4 Answers4

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