NPE error when running TestNg test groups using eclipse

Question

I am trying to run a Test group in TestNG by right clicking on TestNG.xml as a test suite and get below Error.

java.lang.NullPointerException
at execution_Engine.TestCase1_Login.Login(TestCase1_Login.java:54)

Note: When I run the Test on its own(not as a Test suite) it runs fine.

Can anyone be kind enough to point out what the problem is? and solution to this problem.

TestNG.xml

<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd" >
<suite name="Smoke tests">
<test name="regressions Test Suite">
    <groups> 
        <run> 
            <include name="Regression"/> 
        </run> 
    </groups> 
    <classes> 
        <class name="execution_Engine.TestCase1_Login"/> 
        <class name="execution_Engine.TestCase2_InvalidLogin"/>
    </classes>
            <packages>
        <package name="execution_Engine" />
        </packages> 
</test>
</suite>

@SuppressWarnings("unused")
public class TestCase1_Login  {

public static WebDriver driver = null;

 @BeforeMethod
  public static void LaunchIEandNavigate() {  

      /*** Launch IE **/ 
    System.setProperty "webdriver.ie.driver", "C:\\IE\\IEDriverServer.exe");
      driver = new InternetExplorerDriver();

      /*** implicit Wait **/
      driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);

      /*** Navigate to URL **/
      driver.get("http://google.com");



@Test(enabled = true, groups = "Regression")
public void Login() {

       /*** Login Action  **/
       driver.findElement(By.id("UserId")).sendKeys("DummyUser"); Line 54
       driver.findElement(By.id("Password")).sendKeys("password");
       driver.findElement(By.id("Submit-button")).click();

   System.out.println("Testcase1 - ValidLogin executed sucessfully.");

}

@AfterMethod
public void CloseIEandQuit() {
//driver.switchTo().defaultContent();   
  /** Close and quit browser*/
  driver.close();
  driver.quit();

}

Answer 1

Just Add (alwaysRun = true) to the @BeforeMethod annotation.