Introduction to Programming

Using the json-simple library

The getStringValueFromConfig() method is located in the Utils class, which we have created to read the values from the .conf file. This class has the following code:

import org.json.simple.JSONObject;import org.json.simple.parser.JSONParser;import org.json.simple.parser.ParseException;public class Utils {  private static JSONObject config = null;  public static String getStringValueFromConfig(String configFileName,                                                             String key){    if(config == null){      ClassLoader classLoader = Utils.class.getClassLoader();      File file =           new File(classLoader.getResource(configFileName).getFile());      try(FileReader fr = new FileReader(file)){        JSONParser parser = new JSONParser();        config = (JSONObject) parser.parse(fr);      } catch (ParseException ...