java.lang.NullPointerException @Test

Question

Hi I am trying to run the below code with TestNG but all it gives me is java.lang.NullPointerException error. The Before method gets worked. After that, it shows the below error .What's going wrong. Please help!

ERROR :

java.lang.NullPointerException
at lokbo.Login.afterMethod(Login.java:50)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.base/java.lang.reflect.Method.invoke(Unknown Source)
    at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:108)
    at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:523)
    at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:224)
    at org.testng.internal.Invoker.invokeMethod(Invoker.java:731)
    at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:877)
    at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1201)
    at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)
    at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109)
    at org.testng.TestRunner.privateRun(TestRunner.java:776)
    at org.testng.TestRunner.run(TestRunner.java:634)
    at org.testng.SuiteRunner.runTest(SuiteRunner.java:425)
    at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:420)
    at org.testng.SuiteRunner.privateRun(SuiteRunner.java:385)
    at org.testng.SuiteRunner.run(SuiteRunner.java:334)
    at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
    at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
    at org.testng.TestNG.runSuitesSequentially(TestNG.java:1318)
    at org.testng.TestNG.runSuitesLocally(TestNG.java:1243)
    at org.testng.TestNG.runSuites(TestNG.java:1161)
    at org.testng.TestNG.run(TestNG.java:1129)
    at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:114)
    at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
    at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)

Code :

 package lokbo;
 import java.util.concurrent.TimeUnit;
 import org.testng.annotations.Test;

 import org.openqa.selenium.By;
 import org.openqa.selenium.WebDriver;
 import org.openqa.selenium.chrome.ChromeDriver;
 import org.testng.annotations.AfterMethod;

 import org.testng.annotations.BeforeMethod;



 public class Login 
{
  public  WebDriver driver;

 @BeforeMethod
 public void beforeMethod()  {
 System.setProperty("webdriver.chrome.driver", "E:\\RF 
 AUTOMATION\\chromedriver_win32\\chromedriver.exe");
    WebDriver driver=new ChromeDriver();
    String baseurl= "http://dev.idrottonline.se/";
    driver.get(baseurl);
    driver.manage().timeouts().implicitlyWait(300, TimeUnit.SECONDS);


    String expectedTitle = "Idrottonline2 - Svenskidrott";
    String actualTitle="";
    actualTitle=driver.getTitle();
    if(actualTitle.contentEquals(expectedTitle))
    //if(expectedTitle.isDisplayed())   
    {
        System.out.println("Test pass");
    }
    else
    {
        System.out.println("Test Fail");
    }
}
  @Test
  public void login() {

  driver.findElement(By.id("IdrottOnline-LoginBoxTarget")).click();
    driver.findElement(By.id("ioui-access-username")).sendKeys("lagorf01");
    driver.findElement(By.id("ioui-access-password")).sendKeys("Dumbo753");
    driver.findElement(By.xpath(".//*[@id='ioui-access-login']/fieldset/div[5]/div/button")).click();
 }
 @AfterMethod
 public void afterMethod() {
  driver.manage().deleteAllCookies();
  driver.quit();
}
 }