How to read the Json file for specific value in Java using Simple.json library

Question

This what my Json file looks like.

[
   [
    "Name"
    "Age"
    "Height"
   ]
   [
    "Name"
    "Age"
    "Height"
   ]
]

How can I read the specific value like "Name" using simple.json in Java?

This is not json. Do you really mean your data is in arrays? — Hulk, Oct 28 '20 at 06:03
yeah I understand that. Any way to read this specific value? — Alpha08, Oct 28 '20 at 06:08
Also, which library are you referring to - I did not finr anything named `Simple.json`? Did you mean [JSON.simple](https://code.google.com/archive/p/json-simple/)? — Hulk, Oct 28 '20 at 06:13
You understand that this is not json, but still ask us how to parse it with a json parser? I'm somewhat... confused. Please explain a bit more. — Hulk, Oct 28 '20 at 06:35

score 1 · Answer 1 · answered Oct 28 '20 at 06:32

This is invalid json format. But anyway to read json data from a file you can open it and read it to string as shown in here

Then using org.json library you can parse string to either json array or object.

String fileDataJsonObject = "{"Name":"SomeName"}"; //string containing a json object
String fileDataJsonArray = "[{"Name":"SomeName"},{"Name":"SomeName2"}]"; //string containing a json array
 
JSONObject obj = new JSONObject(fileDataJsonObject);
JSONArray array = new JSONArray(fileDataJsonArray);

This is just an example of how you can parse string to json array or an object. For arrays you can then use getJSONObject(index) method to get json objects from array. Also you can use json object getters to get any element within that object.

p.s I just found this useful discussion on stackoverflow. The answers have different ways of parsing json object or array using different libraries.

How to read the Json file for specific value in Java using Simple.json library

1 Answers1