I created 3 file, one is common which is hold common opening browser detail and dashboard page object. And second one is for homepage testcase and third one is for loginIn page or after login page element find test case.

I am able to run dashbaord test case.but i want also run testcase for LogedIn, i can’t.

package BaseDataSource;

import java.io.FileInputStream;
import java.io.IOException;
import java.time.Duration;
import java.util.Properties;
 
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.BeforeTest;

import ParaBank.AutomationTestCase.DashBoard;
import io.github.bonigarcia.wdm.WebDriverManager;

public class MainDataSourceTest 
{

    public WebDriver driver;
    public DashBoard dashboard;
    
    public WebDriver inisilaizebroswer() throws IOException {
        
        Properties prop = new Properties();
        FileInputStream file = new FileInputStream(System.getProperty("user.dir")+"\src\main\java\SourceData\DataSource.properties");
        prop.load(file);
        
         String browserName=prop.getProperty("browser");
         
         if(browserName.equalsIgnoreCase("chrome")) 
         { 
             WebDriverManager.chromedriver().setup();
             driver = new ChromeDriver();
         }
         else if(browserName.equalsIgnoreCase("firefox")) {
             
         }
         else if(browserName.equalsIgnoreCase("chrome")) {
             
         }
         
         driver.manage().window().maximize();
         driver.manage().timeouts().implicitlyWait(Duration.ofSeconds(10));
         return driver;
         
        
    }
    
    @BeforeTest
    public DashBoard LuanchApp() throws IOException
    {
        driver = inisilaizebroswer();
        dashboard = new DashBoard(driver);
        dashboard.GotoURL();
        return dashboard;
        
        
    }
    
    
    public void closedriver()
    {
        driver.close();
        
        
    }
    
    
    
}

package ParaBank.AutomationTestCase;

import org.testng.Assert;
import org.testng.annotations.Test;
import BaseDataSource.MainDataSourceTest;

public class LogedInTest extends MainDataSourceTest

{
    
    
    LogedIn acc = new LogedIn(driver);
    @Test
    public void login() 
    {
            dashboard.clicksubmit("BhaveshSolanki", "Bhavesh@1234");
    }
    @Test
    public void accounttest(){
        
            acc.newAccout();
    }

}

package ParaBank.AutomationTestCase;

import org.testng.Assert;
import org.testng.annotations.Test;
import BaseDataSource.MainDataSourceTest;

public class DashBoardTest extends MainDataSourceTest

{
    @Test
    public void login() 
    {
            dashboard.clicksubmit("BhaveshSolanki", "Bhavesh@1234");
    }
    @Test
    public void about()
    {
        String about = dashboard.VerifyAboutus();
        Assert.assertEquals(about, "https://parabank.parasoft.com/parabank/about.htm");
    }   
    @Test
    public void service() {
        
        String Service = dashboard.VerifyServices();
        Assert.assertEquals(Service, "https://parabank.parasoft.com/parabank/services.htm");
    }
    
    @Test
    public void products() {
         String Products = dashboard.VerifyProducts();
         Assert.assertEquals(Products, "http://www.parasoft.com/jsp/products.jsp");
    }
    
    @Test
    public void location() {
         String Location = dashboard.VerifyLocations(); 
         Assert.assertEquals(Location,
          "http://www.parasoft.com/jsp/pr/contacts.jsp");
    }
    
    @Test
    public void adminpage() {
        String admin = dashboard.VerifyAdminPage();
        Assert.assertEquals(admin, 
                "https://parabank.parasoft.com/parabank/admin.htm");
            
    }
    @Test
    public void RegisterURL() 
    {
            dashboard.clickRegister();
    }

}

I am able suceesfully run dashboard.class testcasts but i am not able to LogedIn.class test cases.

can you please help me to resolve null exception.