title: Selenium Username Password Code Error
body: <p>I am writing a code that enters the username and password into a URL and submits that page. but I keep getting this error</p>
  
  <pre><code> "Caused by: org.openqa.selenium.remote.ErrorHandler$UnknownServerException: 
    Unable to locate element: {"method":"name","selector":"username"}"
  </code></pre>
  
  <p>Below is the code</p>
  
  <pre><code>package org.openqa.selenium.example;
  import org.openqa.selenium.WebDriver;
  import org.openqa.selenium.By;
  import org.openqa.selenium.WebElement;
  import org.openqa.selenium.firefox.FirefoxDriver;
  
  public class LoginPage {
      private final WebDriver driver;
  
      public LoginPage(WebDriver driver) {
          this.driver = driver;
  
          // Check that we're on the right page.
          if (!"Outreach Configuration".equals(driver.getTitle())) {
              // Alternatively, we could navigate to the login page, perhaps logging out first
              throw new IllegalStateException("This is not the login page");
          }
      }
  
      // The login page contains several HTML elements that will be represented as WebElements.
      // The locators for these elements should only be defined once.
  
      //    By usernameLocator = By.name("username");
      //    By passwordLocator = By.name("password");
       //   By loginButtonLocator = By.name("submit");
  
      // The login page allows the user to type their username into the username field
      public LoginPage typeUsername(String username) {
          // This is the only place that "knows" how to enter a username
          driver.findElement(By.name("username")).sendKeys(username);
  
          // Return the current page object as this action doesn't navigate to a page represented by another PageObject
          return this;    
      }
  
      // The login page allows the user to type their password into the password field
      public LoginPage typePassword(String password) {
          // This is the only place that "knows" how to enter a password
          //driver.findElement(passwordLocator).sendKeys(password);
          driver.findElement(By.name("password")).sendKeys(password);
          // Return the current page object as this action doesn't navigate to a page represented by another PageObject
          return this;    
      }
  
      // The login page allows the user to submit the login form
      public HomePage submitLogin() {
          // This is the only place that submits the login form and expects the destination to be the home page.
          // A seperate method should be created for the instance of clicking login whilst expecting a login failure. 
    //      driver.findElement(By.name("submit")).submit();
  
          // Return a new page object representing the destination. Should the login page ever
          // go somewhere else (for example, a legal disclaimer) then changing the method signature
          // for this method will mean that all tests that rely on this behaviour won't compile.
          return new HomePage(driver);    
      }
  
      // The login page allows the user to submit the login form knowing that an invalid username and / or password were entered
      public LoginPage submitLoginExpectingFailure() {
          // This is the only place that submits the login form and expects the destination to be the login page due to login failure.
      //    driver.findElement(By.name("submit")).submit();
  
          // Return a new page object representing the destination. Should the user ever be navigated to the home page after submiting a login with credentials 
          // expected to fail login, the script will fail when it attempts to instantiate the LoginPage PageObject.
          return new LoginPage(driver);   
      }
  
      // Conceptually, the login page offers the user the service of being able to "log into"
      // the application using a user name and password. 
      public HomePage loginAs(String username, String password) {
          // The PageObject methods that enter username, password &amp; submit login have already defined and should not be repeated here.
          typeUsername(username);
          typePassword(password);
          return submitLogin();
      }
      public static void main(String[] args) {
          WebDriver driver = new FirefoxDriver();
  
          // And now use this to visit Google
          driver.get("URL Goes Here");
          LoginPage login = new LoginPage(driver);
          HomePage a=login.loginAs("username","Password");
  
  
      }
  } 
  </code></pre>
  
  <p>I reffered it from <a href="http://code.google.com/p/selenium/wiki/PageObjects" rel="nofollow">http://code.google.com/p/selenium/wiki/PageObjects</a></p>