Exception in thread "main" java.lang.NullPointerException in Selenium Webdriver - testing

Question

class Login as the following method Kreato_Login():-
public void Kreato_Login(){
driver = new FirefoxDriver();
baseUrl = "https://testrugtn.kreatocrm.com/";
driver.manage().timeouts().implicitlyWait(30, TimeUnit. SECONDS);
driver.manage().window().maximize();
driver.get(baseUrl + "/");
driver.findElement(By. id("Login_txtUserName")).clear();
driver.findElement(By. id("Login_txtUserName")).sendKeys( "saravana");
driver.findElement(By. id("Login_txtPassword")).clear();
driver.findElement(By. id("Login_txtPassword")).sendKeys( "5678");
driver.findElement(By. id("Login_btnLogin")).click();
}
Class Lead as the following method "Lead_MandatoryCheck()":-
LoginLogout leadInstance=new LoginLogout();
public void Lead_MandatoryCheck() throws InterruptedException{
leadInstance.Kreato_Login();
driver1.findElement(By. xpath("//a[contains(text(),'Customers')]")).click();
driver1.findElement(By. linkText("Leads")).click();
//Add New
driver1.findElement(By. cssSelector( "#ctl00_ContentPlaceHolder1_cbpSubContent_imgAddNew_CD > span.dx-vam" )).click();
Thread.sleep(3000);
//Save
driver1.findElement(By. cssSelector("#ctl00_ContentPlaceHolder1_cbpAssociationNew_btnNewItemTopCreationSave_CD > span.dx-vam" )).click();
String mandatoryPopup= driver1.switchTo().alert().getText();
driver1.switchTo().alert().accept();
System.out.println(mandatoryPopup);
}
I try to call the above methods from the class Trigger as follows:-
public class TriggerClass {
public static void main(String[] args) throws Exception {
// TODO Auto-generated method stub
/*LeadCreation lc= new LeadCreation();
lc.setUp();
lc.testLeadCreation();
lc.tearDown();*/
LeadModule Lm=new LeadModule();
Lm.Lead_MandatoryCheck();
}
when i run the "Trigger.class"
Exception in thread "main" java.lang.NullPointerException
at workflow.LeadModule.Lead_MandatoryCheck(LeadModule.java:132)
at workflow.TriggerClass.main(TriggerClass.java:13)

Answer 1

This is how you should structure your class, members and functions:
TriggerClass.java:
public class TriggerClass {
public static WebDriver driver;
public static void main(String[] args) throws Exception {
driver = new FirefoxDriver();
LeadModule Lm=new LeadModule();
Lm.Lead_MandatoryCheck();
}
LeadModule.java:
public class LeadModule {
public WebDriver driver;
public LeadModule() {
this.driver = TriggerClass.driver;
}
public void Lead_MandatoryCheck() throws InterruptedException{
LoginLogout leadInstance = new LoginLogout();
leadInstance.Kreato_Login();
driver.findElement(By.xpath("//a[contains(text(),'Customers')]")).click();
driver.findElement(By.linkText("Leads")).click();
//Add New
driver.findElement(By.cssSelector( "#ctl00_ContentPlaceHolder1_cbpSubContent_imgAddNew_CD > span.dx-vam" )).click();
Thread.sleep(3000);
//Save
driver.findElement(By. cssSelector("#ctl00_ContentPlaceHolder1_cbpAssociationNew_btnNewItemTopCreationSave_CD > span.dx-vam" )).click();
String mandatoryPopup= driver.switchTo().alert().getText();
driver.switchTo().alert().accept();
System.out.println(mandatoryPopup);
}
LoginLogout.java:
public class LoginLogout extends LeadModule {
public void Kreato_Login(){
baseUrl = "https://testrugtn.kreatocrm.com/";
driver.manage().timeouts().implicitlyWait(30, TimeUnit. SECONDS);
driver.manage().window().maximize();
driver.get(baseUrl + "/");
driver.findElement(By.id("Login_txtUserName")).clear();
driver.findElement(By.id("Login_txtUserName")).sendKeys("saravana");
driver.findElement(By.id("Login_txtPassword")).clear();
driver.findElement(By.id("Login_txtPassword")).sendKeys("5678");
driver.findElement(By.id("Login_btnLogin")).click();
}
}
Your Java/Selenium basics are not clear. Please read through the documentation or view related tutorials on YouTube.