How to resolve null pointer exception in selenium when page factory method is used

Question

I have 3 classes - one for page locator, one for page action and the other one as script to execute the function. am getting nullpointer exception in main scripts where the function is called. Can anyone help me out, please!!!!.

The following are the code :

HomePageLocator.page

public class HomePageLocator{ WebDriver driver; public HomePageLocator(WebDriver driver) { this.driver= driver; }

    @FindBy(xpath="//*[@id='header']/div[2]/div/div/nav/div[1]/a")
    public WebElement signIn;

}

HomePageAction.page public class HomePageAction{

public WebDriver driver; public HomePageLocator homepageor;

public HomePageAction() {
```
this.homepage = new HomePageLocator(driver);
PageFactory.initElements(driver, this.homepage);
```
}

public void login() { homepageor.signIn.click(); }
BaseTestCase.java

public class BaseTestCase {

public static Logger log = Logger.getLogger("devpinoyLogger");

public static void main(String[] args) throws Throwable  {

    System.setProperty("webdriver.chrome.driver", System.getProperty("user.dir")+"\\src\\test\\resources\\Executables\\chromedriver.exe");
    WebDriver driver = new ChromeDriver();
    driver.get("http://automationpractice.com/index.php");
    driver.manage().window().maximize();
    driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);

    // Home page validation
    HomePageAction homepageaction= new HomePageAction();
    homepageaction.login();


}

Note : Am getting exception in line (homepageaction.login();) the following is the exception logs : Exception in thread "main" java.lang.NullPointerException at org.openqa.selenium.support.pagefactory.DefaultElementLocator.findElement(DefaultElementLocator.java:69) at org.openqa.selenium.support.pagefactory.internal.LocatingElementHandler.invoke(LocatingElementHandler.java:38) at com.sun.proxy.$Proxy3.click(Unknown Source) at com.way2.Pages.actions.HomePage.login(HomePageAction.java:31) at com.way2.Testcases.BaseTestCase.main(BaseTestCase.java:35)

Could you please properly format your code.

SiKing
– SiKing

2019-07-12 20:24:55 +00:00
Commented Jul 12, 2019 at 20:24 — SiKing
– SiKing, Commented Jul 12, 2019 at 20:24

Mohit · Accepted Answer · 2019-07-12 17:58:34Z

0

You are creating the driver in main class, but not passing it to homepageAction public static void main(String[] args) throws Throwable {

System.setProperty("webdriver.chrome.driver", System.getProperty("user.dir")+"\\src\\test\\resources\\Executables\\chromedriver.exe");
WebDriver driver = new ChromeDriver();

Try to pass driver as HomePageAction homepageaction= new HomePageAction(driver); this.driver =driver

answered Jul 12, 2019 at 17:58

Mohit

1

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