Getting Null pointer exception while running the below script using Selenium WebDriver

Question

public class TestBase {
    public static WebDriver driver = null;
    public static Properties prop = null;
    public TestBase() {
        try {
            prop = new Properties();
            FileInputStream ip = new FileInputStream("C:\\seleniumFolder\\SampleMavenProject\\src\\main\\java\\com\\crm\\qa\\config\\config.properties");
            prop.load(ip);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    public static void initialization() {
        String browsername = prop.getProperty("browser");
        if (browsername.equals("chrome")) {
            System.setProperty("webdriver.chrome.driver", "C:\\seleniumFolder\\chromedriver.exe ");
            driver = new ChromeDriver();
        }
        driver.manage().window().maximize();
        driver.manage().deleteAllCookies();
        driver.manage().timeouts().pageLoadTimeout(TestUtil.PAGE_LOAD_TIMEOUT, TimeUnit.SECONDS);
        driver.manage().timeouts().implicitlyWait(TestUtil.IMPLICIT_WAIT, TimeUnit.SECONDS);
        driver.get(prop.getProperty("url"));
    }
}

Answer 1

Seems your FileInputStream ip is not getting initialized. You have to provide (\\) instead of (\) as follows :

FileInputStream ip = new FileInputStream("C:\\seleniumFolder\\SampleMavenProject\\src\\main\\java\com\\crm\\qa\\config\\config.properties");

---

Update

You are seeing java.lang.NullPointerException because to execute a Java Program you have to initiate the execution through a main() method or @Test annotated method (if using TestNG).

So if you want to execute this program through main() method you have to put the current code of public static void initialization() method into public static void main(String[] args) method and execute the program as a Java Program.

You can find a detailed discussion in How to write Selenium Java Application code in IDE through main() and TestNG