JSON to Object[][]?

JSONProvider.java

package components;

import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;
import org.testng.annotations.DataProvider;

import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.Set;

public class JSONProvider {
    @DataProvider(name = "keyProvider")
    public Object[][] keyProvider() throws IOException, ParseException {
        JSONParser parser = new JSONParser();
        String filePath = new File("src/test/java/data/template.json").getAbsolutePath();

        JSONObject template = (JSONObject) parser.parse(new FileReader(filePath));
        Set<String> keys = template.keySet();
        Iterator i = keys.iterator();
        ArrayList<Object[]> array = new ArrayList<Object[]>();
        while(i.hasNext()){
            Object[] ob = new Object[] {i.next()};
            array.add(ob);
        }
        System.out.println(array);
        return (Object[][]) array.toArray();
    }
}

template.json

{
  "description":"",
  "license":"cc-by-nc|cc-by-nc-sa",
  "title":"",
  "download_url":"https://api.soundcloud.com/tracks/\\d{9,}/download",
  "duration": "\\d{2,}",
  "last_modified":"\\d{4}\\/\\d{1,2}\\/\\d{1,2} \\d{2}:\\d{2}:\\d{2} \\+\\d{4}",
  "stream_url":"https://api.soundcloud.com/tracks/\\d{9,}/stream",
  "tag_list":"[a-zA-Z]+",
  "id": "\\d{2,}"
}

TestNG.java

    @Test(dataProvider = "keyProvider")
    public void test_check_record_keys(String key) throws IOException, ParseException {
        r = new Response();
        r.setApi_key(DEFAULT_API_KEY);
        r.setLimit("100");
        System.out.println(key);
        JSONArray jsonArray = r.getResults();

        for (JSONObject record : (Iterable<JSONObject>) jsonArray) {
                Assert.assertTrue(record.containsKey(key));
        }
    }