Getting an error as while reading a JSON file containing 'Usernames' and 'Passwords' using TestNG DataProviders in Selenium

Question

Getting an error as while reading a JSON file using TestNG DataProviders in Selenium.

Error:
class com.google.gson.JsonObject cannot be cast to class org.json.simple.JSONObject (com.google.gson.JsonObject and org.json.simple.JSONObject are in unnamed module of loader 'app')

import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.concurrent.TimeUnit;

import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.parser.ParseException;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;

import com.google.gson.JsonParser;

import io.github.bonigarcia.wdm.WebDriverManager;

public class DataDrivenTest_json {
    WebDriver driver;

    @BeforeClass
    void setUp() { /* to set up chromedriver */
        WebDriverManager.chromedriver().setup();
        driver = new ChromeDriver();
        driver.manage().timeouts().implicitlyWait(10, TimeUnit.MILLISECONDS);
    }

    @Test(dataProvider="dp") /* using dataproviders*/
    void login(String data) {
        String list[] = data.split(",");
  driver.get("some website url");
  driver.findElement(By.cssSelector("[id='Email']")).sendKeys(list[0]);//username
  driver.findElement(By.cssSelector("[id='Password']")).sendKeys(list[1]);//password
  driver.findElement(By.cssSelector("[type='submit']")).click();
    }
    
    @DataProvider(name="dp")
    public String[] readJson() throws IOException{
        @SuppressWarnings("deprecation")
        JsonParser jsonparser = new JsonParser();
        FileReader reader =new FileReader("C:\\Users\\dell\\eclipse-workspace- 
           photon\\ExcelDriven\\src\\test\\java\\Testdata.json");
        @SuppressWarnings("deprecation")
        Object obj = jsonparser.parse(reader); //java object
        JSONObject userLoginsJsonObj = (JSONObject)obj;
        JSONArray userLoginsArray =(JSONArray)userLoginsJsonObj.get("userLogins"); 
        String array[] = new String[userLoginsArray.size()]; 
        for(int i=0; i<userLoginsArray.size();i++) {
            JSONObject users = (JSONObject)userLoginsArray.get(i); 
            String username = (String)users.get("username"); 
           
            String password = (String)users.get("password");
            array[i] = username+","+password;
        }
        return array;
    }
    

    @AfterClass
    void tearDown() { //close driver
        driver.close();
    }
}

/*My MavenProject has testng included and pom.xml file has 'com.googlecode.json-simple' dependency added.Still the above error is visible in console.*/

Answer 1

You import class org.json.simple.JSONObject while you need to import com.google.gson.JsonObject. You cannot just cast an object to any class even if that class has the same name. The package of the class also matters.