JSON.simple (a simple Java library) example

In the output section you can find the details of the example.

- Download json-simple-1.1.jar

For maven: <dependency>     <groupId>com.googlecode.json-simple</groupId>     <artifactId>json-simple</artifactId>     <version>1.1</version> </dependency>

OUTPUT: --------------------createJsonText-------------------- {"PARAMETERS":[{"1":"Json 1. value"},{"2":"Json 2. value"},{"3":"Json 3. value"}],"ID":"ABCD"} --------------------parseJsonText-------------------- ID: ABCD PARAMETERS in order: 1. value = Json 1. value PARAMETERS in order: 2. value = Json 2. value PARAMETERS in order: 3. value = Json 3. value

import org.json.simple.JSONArray; import org.json.simple.JSONObject; import org.json.simple.parser.JSONParser; import org.json.simple.parser.ParseException; public class Test {             public static void main(String[] args) throws ParseException {             Test t = new Test();             String jsonString = t.createJsonText();             t.parseJsonText(jsonString);       }       @SuppressWarnings("unchecked")       public String createJsonText(){             System.out.println("--------------------createJsonText--------------------");                         JSONArray ja = new JSONArray();             for(int i = 1 ; i < 4 ; i++) {                   JSONObject paramsObj = new JSONObject();                   paramsObj.put(i, "Json " + i + ". value");                   ja.add(paramsObj);             }                         JSONObject mainObj = new JSONObject();             mainObj.put("ID", "ABCD");             mainObj.put("PARAMETERS", ja);                         String jsonString = mainObj.toJSONString();             System.out.println(jsonString);                         return jsonString;       }             public void parseJsonText(String jsonString) throws ParseException {             System.out.println("--------------------parseJsonText--------------------");                         JSONParser parser = new JSONParser();             JSONObject jo = (JSONObject) parser.parse(jsonString);                     System.out.println("ID: " + (String) jo.get("ID"));           JSONArray msg1 = (JSONArray) jo.get("PARAMETERS");           if(msg1 != null) {               for (int i = 0; i < msg1.size(); i++) {                   JSONObject jsonobject = (JSONObject) msg1.get(i);                   System.out.println("PARAMETERS in order: " + (i+1) + ". value = "  + (String)jsonobject.get(""+(i+1)));               }           }       }       }