Your library says that it includes code written by Douglas Crockford. That seems very likely to be the json.org json library.

That library had a license that is not Apache License compatible. Inclusion of that code would make your library incompatible with the Apache License.

I have a few questions and a suggestion:

1. is that the code you are referring to in your POM?

2. if so, can you clarify your license so that people don't misunderstand and think that your code is open source.

3. is it possible to switch your dependency to a library that has a valid open source license? I would offer https://github.com/tdunning/open-json as an example of such.

Code:

JSONObject json = new JSONObject();
json.put("key1", "[...]");
json.put("key2", "[title]");
System.out.println(json.toString());

Output:

{"key1":["..."],"key2":"[title]"}

Many of our String data values are enclosed in square brackets. For key1, the data is [...] but the String value is converted into an array while converting to JSON. For key2, it is correctly serialized as a String.

Is there any way to prevent this by escaping the data or using some settings ?

Thanks.

Hi,

I need to parse JSON to XML and back again. I didn't expected that the JSON input and the JSON output (after two parsing steps) differ form each other. The alphabetical ordering isn't an issue. The problem is, that the generated "e" from the XML appears in JSON. On one hand it is plausible, that the XML is parsed strictly to JSON without modification. On the other hand it's just irritating that the JSON changes after parsing back and forth. What is your advise for this problem? Is there already a feature implemented? Or do i need to write a parser by myself?

Thanks in advance,
Sebastian

Sonatype Lift reports:

[CVE-2014-0114] CWE-20: Improper Input Validation
[CVE-2019-10086] CWE-502: Deserialization of Untrusted Data

Hi Andres @aalmiray , json-lib has been widely used in the past few years, although there are a lot of excellent JSON parse software available for developers to choose from, there are still many people who will continue to choose json-lib. In order to make json-lib users have better support, would you consider adding a collaborator to help you manage the community, handle some issues, fix bugs, even add some new features?

Sonatype Lift reports:

[CVE-2012-0881] Apache Xerces2 Java Parser before 2.12.0 allows remote attackers to cause a denial of service (CPU consumption) via a crafted message to an XML service, which triggers hash table collisions.
[CVE-2013-4002] CWE-400: Uncontrolled Resource Consumption ('Resource Exhaustion')
[CVE-2022-23437] CWE-91: XML Injection (aka Blind XPath Injection)
[sonatype-2017-0348] CWE-833: Deadlock
[CVE-2009-2625] CWE-400: Uncontrolled Resource Consumption ('Resource Exhaustion')

Hi, when i try to register bean/value proccesor usually i need to rely on default proccesing to modify the default json on the fly, while keeping the rest of configuration.
The problem is the default proccesing is not accesible from the custom proccesors (is in the private method JSONObject.defaultBeanProcessing)
To avoid circular calls i have to unregister proccesor/call fromObject with provided config/reregister proccesor, in the proccesor itself!
Maybe there is another more elegant way to get it
Thanks and congrats for the lib

Hi Andres @aalmiray , the introduction of the latest json-lib in readme is as follows:
in gradle:

dependencies {
    compile 'org.kordamp.json:json-lib:3.0.1'  // should change to:  json-lib-core
}

in maven:

<dependency>
    <groupId>org.kordamp.json</groupId>
    <artifactId>json-lib</artifactId>  // also should change to: json-lib-core
    <version>3.0.1</version>
</dependency>

Actually, the real name of the json-lib jar file you uploaded to maven2 repo is json-lib-core : http://repo.maven.apache.org/maven2/org/kordamp/json/json-lib-core/3.0.1/
Only by changing the artifactId to json-lib-core can we download the jar file successfully. Or change the name of jar file to json-lib.

Hello,
is it possible to make the alphabetical XML element ordering optional?

(referres to XMLSerializer.java line 942: Arrays.sort( names );)
thanks

Can you make a configuration option at least to output double/float values with the trailing zeros intact? It looks like doubles are trimmed from 1.0 to 1, removing the trailing period and zeros. I would like to keep this intact for our API.

error as follows:
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:145)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:195)
... 19 more

Caused by: org.apache.maven.plugin.PluginContainerException: An API incompatibility was encountered while executing org.codehaus.groovy.maven:gmaven-plugin:1.0-rc-3:compile: java.lang.NoSuchMethodError: org.codehaus.plexus.PlexusContainer.hasChildContainer(Ljava/lang/String;)Z

realm = plugin>org.codehaus.groovy.maven:gmaven-plugin:1.0-rc-3

when changing the version of gmaven-plugin to 1.0-rc-5 , it's OK

I find method _fromJSONObject of JSONObject class has a bug,
jsonObject.setInternal( key, value, jsonConfig );
should be jsonObject._setInternal( key, value, jsonConfig );

run the following code is error.
Tried to assign property id:java.lang.String to bean of class java.lang.String
Exception in thread "main" net.sf.json.JSONException: java.lang.IllegalArgumentException: Cannot invoke com.eheres.test.Tb.setPortalLayout on bean class 'class com.eheres.test.Tb' - argument type mismatch - had objects of type "[Ljava.lang.String;" but expected signature "java.lang.String"

code:

public class Tb {
    private String columns;
    private String portalLayout;
    public String getColumns() {
            return columns;
    }
    public void setColumns(String columns) {
            this.columns = columns;
    }
    public String getPortalLayout() {
            return portalLayout;
    }
    public void setPortalLayout(String portalLayout) {
            this.portalLayout = portalLayout;
    }
}

public class Rs {
    private List<Tb> records;
    public List<Tb> getRecords() {
        return records;
    }
    public void setRecords(List<Tb> records) {
        this.records = records;
    }   
}

public static void main(String[] args) {
    Tb t = new Tb();
    t.setColumns("2");
    t.setPortalLayout("[{\"id\":\"UserOrgs\"}]");

    List<Tb> ts = new ArrayList<Tb>();
    ts.add(t);
    Rs rs = new Rs();
    rs.setRecords(ts);

    JSONObject objr = JSONObject.fromObject(rs);

    String jsonr = objr.toString();
    System.out.println(jsonr);

    JSONObject objr2= JSONObject.fromObject(jsonr);
    Map map = new HashMap();
    map.put("records",Tb.class);
    Rs rs2 = (Rs)JSONObject.toBean(objr2, Rs.class,map);

    Tb tr2 = rs2.getRecords().get(0);
    System.out.println(tr2.getPortalLayout());
}

JSONNull is a singleton class implements Serializable, but don't have "readResolve" method.
So when serialize JSONNull object in Memcache, and deserializes it, it create a new JSONNull object instance, JSONUtil.isNull() can't judge this correctly.

About "readResolve" method, refer to: http://docs.oracle.com/javase/7/docs/platform/serialization/spec/input.html#5903
About singleton class implements Serializable, refer to:
http://stackoverflow.com/questions/3930181/how-to-deal-with-singleton-along-with-serialization

Nothing to see... just didn't know how to delete an irrelevat issue

hi Andres, some particular scenario will trigger the OOM Exception in JSONObject.fromObject():

String str = "{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}:1}";
JSONObject object = JSONObject.fromObject(str);

Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
	at java.base/java.util.Arrays.copyOf(Arrays.java:3746)
	at java.base/java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:172)
	at java.base/java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:748)
	at java.base/java.lang.StringBuffer.append(StringBuffer.java:424)
	at org.kordamp.json.JSONObject.toString(JSONObject.java:2079)
        ...

The problem lies in the buffer allocation memory:
JSONUitls.java

   public static String quote(String string) {
       ...
       StringBuffer sb = new StringBuffer(len * 2);
       ...

Since double quotes need to be escaped, the number of slash symbol will grow exponentially with the number of nested layers.

When i try to use xmlSerializer convert a xml to json , it appear error:
net.sf.json.JSONException: nu.xom.ParsingException: The prefix "pam" for element "pam:message" is not bound. at line 1, column 20.
It seems that method: "addNamespace" do not work, i have write the following code:
xmlSerializer.setNamespace("pam", "http://prismstandard.org/namespaces/pam/2.0/","pam:message");

However, the error still appear.

Hi,

The <license> section of pom.xml mentions that "This product includes software developed by Douglas Crockford (http://www.crockford.com).", but the license applicable to this code isn't specified. For clarity if JSON-lib was derived from the original json.org library I think the LICENSE.txt file should mention it and include the json.org license after the Apache-2.0 license:

Copyright (c) 2002 JSON.org

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

The Software shall be used for Good, not Evil.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

When converting XML to Json, if an element has only one child it won't be interpreted as a collection and it can cause problems:

i.e.

<foo>
  <bar>1</bar>
  <bar>1</bar>
  <bar>1</bar>
</foo>

will be converted to:

{ foo: [ {bar: 1}, {bar: 1}, {bar: 1} ] }

But,

<foo>
  <bar>1</bar>
</foo>

will be converted to:

{ foo: {bar: 1} }

So is there a way to tell XMLSerializer that an element should be an array?

I am trying to convert a JSON Object to JAVA Bean using JSON lib.

The JSON format is:

{
"services": [
{
"url": "https://stashboardni.appspot.com/api/v1/services/fpga-compile-cloud…",
"id": "fpga-compile-cloud-beta",
"description": "FPGA Compile Cloud Beta",
"name": "FPGA Compile Cloud Beta",
"current-event": {
"status": {
"description": "The service is up",
"level": "NORMAL",
"url": "https://stashboardni.appspot.com/api/v1/statuses/up",
"image": "https://stashboardni.appspot.com/images/status/tick-circle.png",
"id": "up",
"name": "up"
},
"url": "https://stashboardni.appspot.com/api/v1/services/fpga-compile-cloud…",
"timestamp": "Mon, 14 Feb 2011 22:35:38 GMT",
"sid": "agxzdGFzaGJvYXJkbmlyDQsSBUV2ZW50GIH6AQw",
"message": "Service is working properly.",
"informational": false
}
},
{
"url": "https://stashboardni.appspot.com/api/v1/services/labview-web-ui-bui…",
"id": "labview-web-ui-builder",
"description": "LabVIEW Web UI Builder",
"name": "LabVIEW Web UI Builder",
"current-event": {
"status": {
"description": "The service is up",
"level": "NORMAL",
"url": "https://stashboardni.appspot.com/api/v1/statuses/up",
"image": "https://stashboardni.appspot.com/images/status/tick-circle.png",
"id": "up",
"name": "up"
},
"url": "https://stashboardni.appspot.com/api/v1/services/labview-web-ui-bui…",
"timestamp": "Thu, 17 Feb 2011 15:50:50 GMT",
"sid": "agxzdGFzaGJvYXJkbmlyDQsSBUV2ZW50GNKJAgw",
"message": "Service is working properly",
"informational": false
}
},
{
"url": "https://stashboardni.appspot.com/api/v1/services/ni-hosted-services…",
"id": "ni-hosted-services-emails",
"description": "The system that handles sending emails for password resets, new acc…",
"name": "NI Hosted Services Emails",
"current-event": {
"status": {
"description": "The service is up",
"level": "NORMAL",
"url": "https://stashboardni.appspot.com/api/v1/statuses/up",
"image": "https://stashboardni.appspot.com/images/status/tick-circle.png",
"id": "up",
"name": "up"
},
"url": "https://stashboardni.appspot.com/api/v1/services/ni-hosted-services…",
"timestamp": "Mon, 14 Feb 2011 22:36:03 GMT",
"sid": "agxzdGFzaGJvYXJkbmlyDQsSBUV2ZW50GJXLAQw",
"message": "Service is working properly.",
"informational": false
}
},
{
"url": "https://stashboardni.appspot.com/api/v1/services/ni-hosted-services…",
"id": "ni-hosted-services-login",
"description": "NI Hosted Services Login",
"name": "NI Hosted Services Login",
"current-event": {
"status": {
"description": "The service is up",
"level": "NORMAL",
"url": "https://stashboardni.appspot.com/api/v1/statuses/up",
"image": "https://stashboardni.appspot.com/images/status/tick-circle.png",
"id": "up",
"name": "up"
},
"url": "https://stashboardni.appspot.com/api/v1/services/ni-hosted-services…",
"timestamp": "Mon, 14 Feb 2011 22:36:55 GMT",
"sid": "agxzdGFzaGJvYXJkbmlyDQsSBUV2ZW50GJbLAQw",
"message": "Service is working properly. ",
"informational": false
}
}
]
}

My Java code which serializes this JSON to Java Bean is:

jsonResp = JSONObject.fromObject(strResponse);
if (jsonResp != null) {
sList = MorphToJavaBean(jsonResp);
}

private StashBoardServices MorphToJavaBean(JSONObject prmJSONObject) {
if (prmJSONObject == null) {
return null;
}

    StashBoardServices sServices = null;
    Map classMap = null;
    MorpherRegistry morpherRegistry = null;
    Morpher dynaMorpher = null;
    List services = null;
    try {
        JsonConfig jsonConfig = new JsonConfig();
        classMap = new HashMap();
        classMap.put("services", StashBoardService.class);

        jsonConfig.setRootClass(StashBoardServices.class);
        jsonConfig.setClassMap(classMap);

        sServices = new StashBoardServices();
        sServices = (StashBoardServices) JSONObject.toBean(prmJSONObject, jsonConfig);

        morpherRegistry = JSONUtils.getMorpherRegistry();
        dynaMorpher = new BeanMorpher(StashBoardService.class, morpherRegistry);
        morpherRegistry.registerMorpher(dynaMorpher);
        services = new ArrayList();
        for (Iterator iter = sServices.getServices().iterator(); iter.hasNext();) {
            services.add(morpherRegistry.morph(StashBoardService.class, iter.next()));
        }
        sServices.setServices(services);
    } catch (Exception ex) {
        Logger.getLogger(StashBoardController.class.getName()).log(Level.SEVERE, null, ex);
    } finally {
        return sServices;
    }
}

I have created Beans as follows:

Services:

public class StashBoardServices
{
private List services;

public StashBoardServices()
{

}

public List getServices() {
    return services;
}

public void setServices(List services) {
    this.services = services;
}

}

Service:
package com.StashBoard;

/**
*

• @author gkhadke
  */
  public class StashBoardService
  {
  private String url;
  private String id;
  private String description;
  private String name;
  private StashBoardCurrentEvent currentevent;

  public StashBoardService()
  {

  }

  public StashBoardCurrentEvent getCurrentevent() {
  return currentevent;
  }

  public void setCurrentevent(StashBoardCurrentEvent currentevent) {
  this.currentevent = currentevent;
  }

  public String getDescription() {
  return description;
  }

  public void setDescription(String description) {
  this.description = description;
  }

  public String getId() {
  return id;
  }

  public void setId(String id) {
  this.id = id;
  }

  public String getName() {
  return name;
  }

  public void setName(String name) {
  this.name = name;
  }

  public String getUrl() {
  return url;
  }

  public void setUrl(String url) {
  this.url = url;
  }

}

and other JAVA bean classes are also defined.

I am getting error since there is "current-event" KV pair in JSONObject response which I can not map to my "currentevent" field in Java Bean.

I wanted to know if there is any annotation support which can resolve this in Json lib?

Version: 3.0.1 and latest 3.0.2 snapshot:

Dependency commons-collections:commons-collections is insecure via https://advisory.checkmarx.net/advisory/vulnerability/Cx78f40514-81ff/

According to documentation https://kordamp.org/json-lib/#_maven json-lib requires: Apache commons-collections4 4.4

So that formally, json-lib does not depend on the insecure package.

However, https://github.com/kordamp/json-lib/blob/master/subprojects/json-lib-core/src/main/java/org/kordamp/json/JsonConfig.java#L20 still points to import org.apache.commons.collections.map.MultiKeyMap;
which instead should be import org.apache.commons.collections4.map.MultiKeyMap;

Currently, I get errors like
NoClassDefFoundError: Could not initialize class org.kordamp.json.JsonConfig
because of that.

The following test case fails,

The difference between this test and testXmlWithSpaceArray which works is the xmlns attribute on the 'e' element.

 public void testXmlWithSpaceArrayNamespace() throws IOException, SAXException,     ParserConfigurationException {
        String xml =
            "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" +
                "<e xmlns=\"urn:foo-1.0\">\n" +
               "   <c>\n" +
                "      <u>\n" +
                "            <chg>\n" +
                "                  <a>\n" +
                "                      <s>   </s>" +
                "                      <s>   </s>" +
                "                  </a>" +
                "            </chg>\n" +
                "      </u>\n" +
                "   </c>\n" +
                "</e>";

        final XMLSerializer tested = new XMLSerializer();
        //tested.setKeepCData(true);
        tested.setTypeHintsEnabled(false);        
        tested.setRootName("data");

         final JSON jsonRepresentation = tested.read(xml);
        final String jsonText = jsonRepresentation.toString();
        assertTrue(jsonText.contains("[\"   \""));
    }

If you take a JSON document with a string key/value pair, where the value is a zero length string:
{"test1": ""}
and convert it to XML with hints enabled it becomes

<o><test1 type=string/><o>

which looks good, but if you then convert the XML back to JSON, the key value pair is returned as an empty array:
{"test1": []}
which is bad.

XMLSerializer is ignoring the type = string attribute when the text length is zero.

This can be fixed by adding code to the isObject() and checkChildElements() functions to check for the string type attribute like:

    String type = getType(element);
    if (type != null && type.equals(JSONTypes.STRING) && !isTopLevel)
        return false;

hi, i have a problem

like this:

<school>
    <students>
        <count>1</count>
        <student>
            <name>stu1</name>
            <id>1</id>
        </student>
    </students>
</school>

I need to convert source to target,Can someone help me?

"school":{
        students:{
            "count":"1",
            "student":[
                {
                    "name":"stu1",
                    "id":"1"
                }
            ]
        }
}

A few times in the past people have complained that Json-lib brings in too many dependencies due to all the features it contains. Breaking into smaller modules (such as xml, dynabeans, groovy) mitigates the problem. It's probably a good idea to publish an all-modules bundle (BOM perhaps?), for those people that want everything in a single package.

Syntax rules for JSON and XMLs are not always compatible.
For example, A JSON data such as {"16x16": "image_url"} can't be converted to <o><16x16>image_url</16x16></o> as XML tag name can't be started with a number.

Is there a workaround for this already in place in the library, if yes what is it? if not what's the expected solution to address such scenarios?

Some cases of XML that contain special JSON characters don't convert to JSON properly

<?xml version="1.0" encoding="UTF-8"?>
<e>
   <c>
      <u>
            <chg>
                  <addr>
                      <street>   </street>                  </addr>            </chg>
      </u>
   </c>
</e>

The spaces in get removed

<?xml version="1.0" encoding="UTF-8"?>
<data><e>{}</e><e>{}</e></data>

The {} is data and should not get stripped by the parser

Hello, here is the code snippet:

public boolean Login() {
        JSONObject o = new JSONObject()
                .put("apikey", apiKey)
                .put("username", userName)
                .put("userkey", userKey);
        RequestBody b = RequestBody.create(JSON, o.toString());
        Request r = new Request.Builder()
                .url(endPoint + "login")
                .post(b)
                .build();
        try {
            Response res = client.newCall(r).execute();
            System.out.println(res.body().string());
            JSONObject ro = (JSONObject) JSONSerializer.toJSON(res.body().string()); // Exception happens here
            token = ro.getString("token");
            //...............

prints out:

{
  "token": "eyJhbGciOiJSUzI1NiIsInR5cCI-----------snip----------PWp-6T5I36EYxuzC28IeTEH7XU3mtcdA"
}

Exception happening in: JSONObject ro = (JSONObject) JSONSerializer.toJSON(res.body().string());

java.lang.IllegalStateException: closed
	at okio.RealBufferedSource.rangeEquals(RealBufferedSource.java:377)
	at okio.RealBufferedSource.rangeEquals(RealBufferedSource.java:371)
	at okhttp3.internal.Util.bomAwareCharset(Util.java:412)
	at okhttp3.ResponseBody.string(ResponseBody.java:173)
	at MyApi.Login(MyApi.java:68)
	at App$1.run(App.java:175)

Is this a problem on my end? The token string is over 520 characters long. might the length be an issue?

A json string, maybe the user's name just is null:

{
  "name": "null",
  "mobile": "123"
}

Parsing：

JSONObject json = JSONObject.fromObject(jsonStr);
System.out.println(json.getString("name"));

Output:

“null”

But expected：

null

I read the source code, the string null is considered a JSON, So quote are added to both ends of the string null.

if( quoted && v instanceof String && (JSONUtils.mayBeJSON( (String) v ) || JSONUtils.isFunction( v ))){
       v = JSONUtils.DOUBLE_QUOTE + v + JSONUtils.DOUBLE_QUOTE;
}
public static boolean mayBeJSON( String string ) {
      return string != null
            && ("null".equals( string )
                  || (string.startsWith( "[" ) && string.endsWith( "]" )) || (string.startsWith( "{" ) && string.endsWith( "}" )));
   }

If this is a bug, I am happy to fix it.

This occurs when the string is nested and more than one level deep, e.g it occurs for
{"a": {"b": "[c-d]"}} but not {"b": "[c-d]"}

I'd expect the string "{"a": {"b": "[c-d]"}}" to be deserialized to:
{
"a" : {
"b" : "[c-d]"
}
}

It's actually deserialized to:
{
"a" : {
"b" : ["c-d"]
}
}

Here's a test for this that currently fails:

   public void testElement_Object_nested() {
      JSONObject jsonObject1 = new JSONObject();
      jsonObject1.element( "str", "\"[]\"" );
      Assertions.assertTrue(jsonObject1.get( "str" ) instanceof String); // This assertion passes
      
      JSONObject jsonObject2 = new JSONObject();
      jsonObject2.element( "obj", jsonObject1);
      Assertions.assertTrue(jsonObject2.getJSONObject( "obj" ).get( "str" ) instanceof String); // This assertion fails
   }

I'm running version 2.4.

Hi Andres @aalmiray, in the latest verion 3.0.0, in function JSONObject.element(key, value), if the input value is a valid JSON formatted string, it will still output a string instead of converting it to JSONObject/JSONArray. But if the string is "null", it will be transformed to a JSONNull, which I think it maybe unreasonable, so I fix it to output the string "null".

public void test_object_element_null_string() {
    JSONObject object = new JSONObject();
    object.element("key1", "{}");
    object.element("key2", "[]");
    object.element("key3", "null");
    Assertions.assertTrue(object.get("key1") instanceof String);
    Assertions.assertTrue(object.get("key2") instanceof String);
    Assertions.assertTrue(object.get("key3") instanceof JSONNull);
    System.out.println(object);

    // {"key1":"{}","key2":"[]","key":null}
    "{}" JSONObject format --> string
    "[]" JSONArray format --> string
    "null" JSONNull formt --> JSONNull
}

However, in function JSONArray.element(), if the string is a valid JSON formatted string, it will be transformed to a JSONArray/JSONObject/JSONNull.

/**
 * Append a String value. This increases the array's length by one.<br>
 * The string may be a valid JSON formatted string, in tha case, it will be
 * transformed to a JSONArray, JSONObject or JSONNull.
 *
 * @param value A String value.
 *
 * @return this.
 */
public JSONArray element(String value) {
    return element(value, new JsonConfig());
}

It is because of this way of handling the input string in JSONArray that we can never get an JSONArray like this: ["null", "string"]...

public void test_array_element_null_string() {
    JSONArray array = new JSONArray();
    array.element("\"null\"");
    array.element("null");
    System.out.println(array);

    // ["\"null\"",null]
}

I wonder why the function of element() in JSONArray and JSONObject handle the input value in diffrent way?

Try to include it on my POM file as

But am getting this ERROR ::
Missing artifact org.kordamp.json:json-lib-core:jar:3.0.2-SNAPSHOT