Problems to continue to parse JSON to JAVA

Question

I am trying to parse a json string to java but have got stuck. My code looks like the below.

public static void main(String args[]) throws FileNotFoundException, IOException, ParseException {


    // parsing file "JSONExample.json" 
       Object obj = new JSONParser().parse(new FileReader("teams.json")); 

    // typecasting obj to JSONObject 
       JSONObject jo = (JSONObject) obj; 


    // getting address 
       Map teams = ((Map)jo.get("api")); 

       // iterating address Map 
       Iterator<Map.Entry> itr1 = teams.entrySet().iterator(); 
       while (itr1.hasNext()) { 
           Map.Entry pair = itr1.next(); 


           System.out.println(pair.getKey() + " : " + pair.getValue()); 
       } 

And I get the following result.

    teams : [{"arena":"Old Trafford","name":"Manchester United","team_id":33,"city":"Manchester"}]
    results : 1

My teams.json looks like following

    {
        "api": {
            "results": 1,
            "teams": [
                {
                    "team_id": 33,
                    "name": "Manchester United",
                    "arena": "Old Trafford",
                    "city": "Manchester",
                }
            ]
        }
    }

How do I continue if I just want the keys and values in the teams-array into an arraylist in java for example.

Answer 1

you can use GSON library of google. Let's try this example.

1. First create your java Bean (FootballPlayer.java)

   FootballPlayer.java

2. Then you can parse your JSON to Array:

   ReadJson1.java

Credits to: Github@RicardoMoya