CODEWITHSUNDEEP
javajson
Sajjad Serajzadeh
Sajjad Serajzadeh

Reputation: 361

Convert part of nested Json object into Java Map

I have this Json:

{
  "withDrawAccountNumber": "1.10.100.1",
  "Amount": "1000",
  "creditor": {
    "2.20.200.2": "1700",
    "2.20.200.1": "300"
  }
}

i want to get the creditor's key value in HashMap, output must be like this:

"2.20.200.2": "1700",
"2.20.200.1": "300"

i dont have any idea how i must do this.

Upvotes: 0

Views: 113

Answers (3)

Abhishek
Abhishek

Reputation: 433

why not use this :

    Map<String,String> testMap = new HashMap<String, String>();
        String testJson = "{\r\n"
                + "  \"withDrawAccountNumber\": \"1.10.100.1\",\r\n"
                + "  \"Amount\": \"1000\",\r\n"
                + "  \"creditor\": {\r\n"
                + "    \"2.20.200.2\": \"1700\",\r\n"
                + "    \"2.20.200.1\": \"300\"\r\n"
                + "  }\r\n"
                + "}";
        
        JSONObject ob = new JSONObject(testJson);
        JSONObject cr = ob.getJSONObject("creditor");
        Set<String> keys = cr.keySet();
        for(String key : keys) {
            testMap.put(key, cr.getString(key));
        }
        
        testMap.forEach((K,V)->System.out.println("key : "+K+" Value : "+V));

Upvotes: 1

Asif
Asif

Reputation: 397

Gson gson = new Gson();
Map map = gson.fromJson(jsonData, Map.class);

Upvotes: 1

DevRichter
DevRichter

Reputation: 1

I dont really see the purpose on why you would do that, but you could do something like this i guess:

JSONObject jsonObj = new JSONObject(obj);
HashMap<String,String> map = new HashMap<String,String>();

String value = jsonObj.getString("2.20.2001");
map.put("2.20.2001", value);
// ... use map here in what you want to achieve

Upvotes: 0

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