Example of how you can read and parse JSON file in Java. Requires JSON library.

main.java

import org.json.*;
import java.io.*;

public class main {
    public static JSONObject obj;
    public static void main(String args[]){
        try {
            obj = new JSONObject( fileToString("src/main/resources/questions.json") );

            JSONArray questionsArray = obj.getJSONArray("question");

            for(int i = 0; i < questionsArray.length(); i++){
                System.out.println((i+1) + ") " + questionsArray.getJSONObject(i).getString("questionText"));

                if(questionsArray.getJSONObject(i).getString("type").equals("mcq")){
                   JSONArray answersArray = questionsArray.getJSONObject(i).getJSONArray("options");

                   for(int x = 0; x < answersArray.length(); x++){
                       System.out.println("  " + (x+1) + ") " + answersArray.get(x));
                   }
                }

                System.out.println();
                System.out.println("Answer is: " + questionsArray.getJSONObject(i).getString("answer"));

                System.out.println("-----------------");
                System.out.println();
            }


        } catch(Exception e){
            System.out.println("Error building JSON");
        }
        
    }


    private static String fileToString(String fileName){
        String str = "";
        try {
            InputStream is = new FileInputStream(fileName);
            BufferedReader buf = new BufferedReader(new InputStreamReader(is));

            String line = buf.readLine();
            StringBuilder sb = new StringBuilder();

            while (line != null) {
                sb.append(line).append("\n");
                line = buf.readLine();
            }

            String fileAsString = sb.toString();

            return fileAsString;

        } catch(Exception e){
            System.out.println("Error");
        }

        return str;
    }
}

questions.json

{
  "question": [
    {
      "questionText": "What is the best programming language",
      "options": [
        "php",
        "java",
        "c++"
      ],
      "answer": "php",
      "type": "mcq"
    },
    {
      "questionText": "Favourite cheese",
      "options": [
        "gouda",
        "goat",
        "parmesian"
      ],
      "answer": "gouda",
      "type": "mcq"
    },
    {
      "questionText": "My name is ______",
      "answer": "zach",
      "type": "fib"
    }
  ]
}

mer30