Convert Integer to specific String format

Question

I have an integer value, say int id whose value i get runtime by getter function. I want to replace this value of id in place of "VALUE" from .json like as follows

{ "id":"VALUE", "name": "Name updated", "description": "description Updated", "active": false }

I found following way to replace it if id is String,

String str = "myJson.json";
str.replace("\"VALUE\"", "\"id\"");

How can i use int id in above function with this format "\"id\"" ? Any other solution are welcome.

EDIT:

String str = "myJson.json";

is wrong way to get json content into String.

`str.replace("\"VALUE\"", "\"" + id + "\"");` ? Or simpler: `str.replace("VALUE", "" + id);`? — assylias, Oct 13 '16 at 13:34

score 0 · Answer 1 · answered Oct 13 '16 at 13:40

0

You can do it with simple regex replace, e.g.:

public static void main(String[] args) {
    String value = "{\"id\":\"VALUE\",\"name\": \"Name updated\",\"description\": \"description Updated\",\"active\": false}";
    int id = 5;
    value = value.replaceAll("\"VALUE\"", String.valueOf(id));
    System.out.println(value);
}

answered Oct 13 '16 at 13:40

Darshan Mehta

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I do not have String. I have a Json file and int id. I need to convert the string again into the Json file. I am really new in .json kind of things. :( – user3042916 Oct 13 '16 at 13:46
Here is the example to replace content in files, all we need to do is to use the above example and replace String : http://stackoverflow.com/questions/3935791/find-and-replace-words-lines-in-a-filehttp://stackoverflow.com/questions/3935791/find-and-replace-words-lines-in-a-file – Darshan Mehta Oct 13 '16 at 13:51

Karthik · Answer 2 · 2016-10-13T13:54:19.557

0

Using org.json library you can assign it to JSON Object and Use the put method:

JSONObject jsonObject= new JSONObject(YOUR_STRING);
String[] names = JSONObject.getNames(jsonObject);
JSONArray jsonArray = jsonObject.toJSONArray(new JSONArray(names));

 JSONObject id=  jsonArray.getJSONObject(0).getJSONObject("id");
    person.put("VALUE", id);

regex replace may create some issue by replace someother matching string .

edited Oct 13 '16 at 13:54

answered Oct 13 '16 at 13:45

Karthik

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5
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i did this. but `jsonArray`can not be resolved. No import option appears rather asking me to create new variable. – user3042916 Oct 13 '16 at 13:48
you can use toJSONArray() to convert a JSONObject to JSONArray.I have edited my answer. – Karthik Oct 13 '16 at 13:55

score 0 · Accepted Answer · answered Oct 13 '16 at 14:34

I did in following way. To replace content of Json file need to convert contents in to String. I did this with help of following function.

public static String loadJson(String jsonFileName) throws IOException {
    InputStream stream = Thread.currentThread().getContextClassLoader().getResourceAsStream(jsonFileName);
    return IOUtils.toString(stream);
}

Then declare a String variable,

String editedJson = loadJson(TEST_SET + "myJson.json");
editedJson.replace("VALUE", "" + id);

Convert Integer to specific String format

3 Answers3