JSONObject: Create Json Document

A JSONObject is an unordered collection of name/value pairs. It is used to create  json document.

For example, lets create below json document.

{

         "organization": "ABC Corportion",

         "name": "Krishna",

         "id": 123

}

Step 1: Instantiate JsonObject

JSONObject jsonObject = new JSONObject();

Step 2: Add respective properties using put method.

jsonObject.put("name", "Krishna");

jsonObject.put("id", 123);

jsonObject.put("organization", "ABC Corportion");

App.java

package com.sample;

import org.json.JSONObject;

public class App {

 public static void main(String args[]) {
  JSONObject jsonObject = new JSONObject();
  
  jsonObject.put("name", "Krishna");
  jsonObject.put("id", 123);
  jsonObject.put("organization", "ABC Corportion");
  
  System.out.println(jsonObject);
 }
}

Output

{"organization":"ABC Corportion","name":"Krishna","id":123}

Note

a.   Keys are unique strings that can’t be null

b.   Values can be any primitive types, JSONArray or JSONObject.NULL.

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