JAVASCRIPT

how to parse json in java

import org.json.*;

String jsonString = ... ; //assign your JSON String here
JSONObject obj = new JSONObject(jsonString);
String pageName = obj.getJSONObject("pageInfo").getString("pageName");

JSONArray arr = obj.getJSONArray("posts");
for (int i = 0; i < arr.length(); i++)
{
    String post_id = arr.getJSONObject(i).getString("post_id");
    ......
}

java parse json

//from object to JSON 
Gson gson = new Gson();
gson.toJson(yourObject);

// from JSON to object 
yourObject o = gson.fromJson(JSONString,yourObject.class);

json parse java

public static void main(String[] args) throws Exception {
    JSONObject jsonObject = (JSONObject) readJsonSimpleDemo("example.json");
    System.out.println(jsonObject);
    System.out.println(jsonObject.get("age"));
}
    
public static Object readJsonSimpleDemo(String filename) throws Exception {
    FileReader reader = new FileReader(filename);
    JSONParser jsonParser = new JSONParser();
    return jsonParser.parse(reader);
}

Parsing JSON Object in Java

JSONObject obj = new JSONObject("{interests : [{interestKey:Dogs}, {interestKey:Cats}]}");

List<String> list = new ArrayList<String>();
JSONArray array = obj.getJSONArray("interests");
for(int i = 0 ; i < array.length() ; i++){
    list.add(array.getJSONObject(i).getString("interestKey"));
}

parse json java

import org.json.*;
//JSON de test
string maTasse = {couleur: Rouge};
JSONObject tasse = new JSONObject(maTasse);
System.out.println(tasse.getString(couleur)); //Rouge