Extracting JSON data into Java objects

Now that the basic syntax has been covered, we will start building the JSON DataProvider method. First, we need a file I/O method to read the JSON data from a file. The parameter to the method will be the filename, including the path and string type. The method will be static and return JSONObject. Here is the code sample:

/**
 * extractData_JSON - method to extract JSON data from a file
 * 
 * @param file (including path)
 * @return JSONObject
 * @throws Exception
 */
public static JSONObject extractData_JSON(String file) throws Exception {
    FileReader reader = new FileReader(file);
    JSONParser jsonParser = new JSONParser();

    return (JSONObject) jsonParser.parse(reader);
}

In cases where users might want to extract only specific sets of JSON data, as when filtering for specific test cases, they could create a wrapper method around the extractData_JSON method that would allow a parameter to be used as a filter. This method would also be static...