Ads

Tutorials

How to convert hashmap to json in Java? What is JSON? JSON Tutorials JSON-JSP example JSON and Servlet example "JSONArray" example in Java JSONObject example in Java Parsing a message in JavaScript with JSON Creating Message in JSON with JavaScript Creating Array Objects in JavaScript with JSON JSON in JavaScript

"JSONArray" example in Java

In this part of JSON tutorial you will study how to use JSONArray in Java. JSONArray is a sequential and ordered way of collection values.It may consists of Boolean, JSONArray, JSONObject, Number and String or the JSONObject.NULL objects.

To have functionality of JSON in your java program you must have JSON-lib. JSON-lib also requires following "JAR" files:

commons-lang.jar
commons-beanutils.jar
commons-collections.jar
commons-logging.jar
ezmorph.jar
json-lib-2.2.2-jdk15.jar

JSON-lib is a java library for that transforms beans, collections, maps, java arrays and XML to JSON and then for retransforming them back to beans, collections, maps and others.

In this example we are going to use JSONArray for creating an object of JSONArray and then we will print this array object . For using JSONArray class we have to import package "net.sf.json". To add elements in this object we have used add() method. Here is the full example code ofJSONJavaArray.java as follows:

FirstJSONJava.java


import net.sf.json.JSONArray;



public class JSONJavaArray

{

  public static void main(String args[]){

   JSONArray arrayObj=new JSONArray();

 arrayObj.add("name :");

 arrayObj.add("Amit Kumar");

 arrayObj.add("Max.Marks :");

 arrayObj.add(new Integer(100));

 arrayObj.add("Min.Marks");

 arrayObj.add(new Double(40));

 arrayObj.add("Scored");

 arrayObj.add(new Double(66.67));

 System.out.println(arrayObj);

  }

}

To run this example you have to follow these few steps as follows:

Download JSON-lib jar and other supporting jars
Add these jars to your classpath
create and save JSONJavaArray.java
Compile it and execute ,You will get following output:

Output:

Download Source Code

Spring Framework Training

R Programming Training

Share on Google+

"JSONArray" example in Java

Posted on: September 27, 2008 If you enjoyed this post then why not add us on Google+? Add us to your Circles

Related Tutorials

How to convert hashmap to json in Java?

What is JSON?

JSON Tutorials

JSON-JSP example

JSON and Servlet example

Discuss: "JSONArray" example in Java View All Comments

Post your Comment

Comments:6

Shivaraj RH
September 6, 2011
Thanks

I like this Rose India all articles. Thank u so much your detailed info.

Kinjan
October 11, 2011
List to Jason Array

Thanks to rose india....i got solution for convering List to json array........

krishna
December 2, 2011
error

i m getting below error java.lang.ClassNotFoundException: net.sf.json.JSONArray org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1688) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1533) org.eclipse.trans.JsonTransServlet.doGet(JsonTransServlet.java:34) javax.servlet.http.HttpServlet.service(HttpServlet.java:621) javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

naveed khan
September 6, 2012
Comment

Thank you very helpfull example..

Ravi
October 26, 2012
json array

the output is wrong. comma separates the name ,value pair. the correct list should look like this: [ "name" : "Amit Kumar" , "Max.Marks" : " 100" ] the example generates this [ "name :", "Amit Kumar" , "Max.Marks:" :," 100" ]

Jefferson Ferregato
October 14, 2013
Obrigado! Thanks!

Ajudou muito! Thank u so much!

Ads