Custom json parser to convert an array within an array to java.util.List of type String

package com.indrajith;

import java.util.ArrayList;
import java.util.List;

public class Main {

    public static void main(String[] args) {



        List<String> a=
        split("[\n" +
                "\t{\n" +
                "\t\t\"id\": \"0001\",\n" +
                "\t\t\"type\": \"donut\",\n" +
                "\t\t\"name\": \"Cake\",\n" +
                "\t\t\"ppu\": 0.55,\n" +
                "\t\t\"batters\":\n" +
                "\t\t\t{\n" +
                "\t\t\t\t\"batter\":\n" +
                "\t\t\t\t\t[\n" +
                "\t\t\t\t\t\t{ \"id\": \"1001\", \"type\": \"Regular\" },\n" +
                "\t\t\t\t\t\t{ \"id\": \"1002\", \"type\": \"Chocolate\" },\n" +
                "\t\t\t\t\t\t{ \"id\": \"1003\", \"type\": \"Blueberry\" },\n" +
                "\t\t\t\t\t\t{ \"id\": \"1004\", \"type\": \"Devil's Food\" }\n" +
                "\t\t\t\t\t]\n" +
                "\t\t\t},\n" +
                "\t\t\"topping\":\n" +
                "\t\t\t[\n" +
                "\t\t\t\t{ \"id\": \"5001\", \"type\": \"None\" },\n" +
                "\t\t\t\t{ \"id\": \"5002\", \"type\": \"Glazed\" },\n" +
                "\t\t\t\t{ \"id\": \"5005\", \"type\": \"Sugar\" },\n" +
                "\t\t\t\t{ \"id\": \"5007\", \"type\": \"Powdered Sugar\" },\n" +
                "\t\t\t\t{ \"id\": \"5006\", \"type\": \"Chocolate with Sprinkles\" },\n" +
                "\t\t\t\t{ \"id\": \"5003\", \"type\": \"Chocolate\" },\n" +
                "\t\t\t\t{ \"id\": \"5004\", \"type\": \"Maple\" }\n" +
                "\t\t\t]\n" +
                "\t},\n" +
                "\t{\n" +
                "\t\t\"id\": \"0002\",\n" +
                "\t\t\"type\": \"donut\",\n" +
                "\t\t\"name\": \"Raised\",\n" +
                "\t\t\"ppu\": 0.55,\n" +
                "\t\t\"batters\":\n" +
                "\t\t\t{\n" +
                "\t\t\t\t\"batter\":\n" +
                "\t\t\t\t\t[\n" +
                "\t\t\t\t\t\t{ \"id\": \"1001\", \"type\": \"Regular\" }\n" +
                "\t\t\t\t\t]\n" +
                "\t\t\t},\n" +
                "\t\t\"topping\":\n" +
                "\t\t\t[\n" +
                "\t\t\t\t{ \"id\": \"5001\", \"type\": \"None\" },\n" +
                "\t\t\t\t{ \"id\": \"5002\", \"type\": \"Glazed\" },\n" +
                "\t\t\t\t{ \"id\": \"5005\", \"type\": \"Sugar\" },\n" +
                "\t\t\t\t{ \"id\": \"5003\", \"type\": \"Chocolate\" },\n" +
                "\t\t\t\t{ \"id\": \"5004\", \"type\": \"Maple\" }\n" +
                "\t\t\t]\n" +
                "\t},\n" +
                "\t{\n" +
                "\t\t\"id\": \"0003\",\n" +
                "\t\t\"type\": \"donut\",\n" +
                "\t\t\"name\": \"Old Fashioned\",\n" +
                "\t\t\"ppu\": 0.55,\n" +
                "\t\t\"batters\":\n" +
                "\t\t\t{\n" +
                "\t\t\t\t\"batter\":\n" +
                "\t\t\t\t\t[\n" +
                "\t\t\t\t\t\t{ \"id\": \"1001\", \"type\": \"Regular\" },\n" +
                "\t\t\t\t\t\t{ \"id\": \"1002\", \"type\": \"Chocolate\" }\n" +
                "\t\t\t\t\t]\n" +
                "\t\t\t},\n" +
                "\t\t\"topping\":\n" +
                "\t\t\t[\n" +
                "\t\t\t\t{ \"id\": \"5001\", \"type\": \"None\" },\n" +
                "\t\t\t\t{ \"id\": \"5002\", \"type\": \"Glazed\" },\n" +
                "\t\t\t\t{ \"id\": \"5003\", \"type\": \"Chocolate\" },\n" +
                "\t\t\t\t{ \"id\": \"5004\", \"type\": \"Maple\" }\n" +
                "\t\t\t]\n" +
                "\t}\n" +
                "]","topping");

    }


    private static List<String> split(String json,String field) {

        char startChar = '{';
        char endChar = '}';


        List<String> returnList = new ArrayList<>();

        if (field != null && !field.isEmpty()) {

            json = json.split(field)[1];

        }

        for (int i = 0; i < json.length(); i++) {

            if (json.charAt(i) == startChar) {
                int count = 0;

                for (int j = 0; j < json.length(); j++) {

                    if (json.charAt(j) == startChar) {
                        count++;
                    }

                    if (json.charAt(j) == startChar) {
                        count--;
                    }

                    if(count==0){
                        returnList.add(json.substring(i,j+1));
                        i=j;
                        break;

                    }


                }


            }
        }

        return returnList;
    }
}