parse json values using java json parser

Question

I have a josn like this.From this how can i retrive platfrom and version values using java

code

public static void main(String[] args)
        throws org.json.simple.parser.ParseException {

    try {
        // read the json file
        FileReader reader = new FileReader(filePath);
        JSONParser jsonParser = new JSONParser();
        JSONObject jsonObject = (JSONObject) jsonParser.parse(reader);

    } catch (FileNotFoundException ex) {
        ex.printStackTrace();
    } catch (IOException ex) {
        ex.printStackTrace();
    } catch (NullPointerException ex) {
        ex.printStackTrace();
    }

}

josn

{
  "France24":[
    {
      "platform":"Linux",
      "version":"12.3",      
    }
  ],

   "Seloger":[
    {
      "platform":"windows",
      "version":"8",      
    }
  ],

  "Marmiton":[
   {
      "platform":"mac",
      "version":"10.1",

    }
  ]

 }

score 1 · Answer 1 · answered Jun 23 '14 at 08:53

JSONArray jArray = jsonObject.getJSONArray("France24");
JSONObject france24Object = jArray.get(0);
String platform = france24Object.getString("platform");
String version = france24Object.getString("version");

Similarly, replace France24 with Seloger and Marmiton and repeat.

score 1 · Accepted Answer · edited May 23 '17 at 11:57

1

List<String> platformLst = new ArrayList<String>();
List<String> versionLst = new ArrayList<String>();
JSONArray array = obj.getJSONArray("France24");
for(int i = 0 ; i < array.length() ; i++){
    JSONObject obj = array.getJSONObject(i);
    versionLst.add(obj.getString("platform"));
    platformLst .add(obj.getString("version"));
}

Existing Question

Example

Simple Json Tutorial Link

edited May 23 '17 at 11:57

Community

1
1

answered Jun 23 '14 at 08:53

Jayaram

1,715
18
30

@Psl, do you mean versionLst and platformLst is not getting populated? – Jayaram Jun 23 '14 at 09:02
getting error in place of ` JSONArray array = jsonObject.getJSONArray("France24");` – Psl Jun 23 '14 at 09:05
Shouldn't be...Can you please share the exception details? – Jayaram Jun 23 '14 at 09:07
`The method getJSONArray(String) is undefined for the type JSONObject Type mismatch: cannot convert from org.json.JSONObject to org.json.simple.JSONObject The method getString(String) is undefined for the type JSONObject The method getString(String) is undefined for the type JSONObject` – Psl Jun 23 '14 at 09:08
ok beacuse of you are using simple json where as you are importing org.json....check your import statment and correct those..also try using JSONArray msg = (JSONArray) jsonObject.get("France24"); – Jayaram Jun 23 '14 at 09:15
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/56095/discussion-between-jayaram-pradhan-and-psl). – Jayaram Jun 23 '14 at 09:16

score 1 · Answer 3 · answered Jun 23 '14 at 08:54

1

Like that:

JSONObject france = jsonObject.getJsonArray("France24").getJsonObject(0);
String platform = france.getString("platform");
String version = france.getString("version");

answered Jun 23 '14 at 08:54

win_wave

1,498
11
9

parse json values using java json parser

3 Answers3