Selenium +java multiple Common driver issues

Problem point: Too long did not write selenium code, incredibly put driver common problem forget, namely: Each write a test class, the execution process will create a new window, this should say is very unprofessional.
Probably think of a method, although it does not seem professional, but feel able to use it is very happy.
Steps to resolve:
1 Create a method to get driver Getdriver ()
2 Create a member variable and assign Getdriver () to a member variable
3 Other business classes when using driver, you can get the same driver through the parent class. Driver Way

    public class login{private static final String username= "[email protected]";    private static final String password= "123456";    public static final Webdriver driver=getdriver (); Public Login () {}//Get driver public static Webdriver Getdriver () {System.setproperty ("Webdriver.chrome.driver", "othe r/. /.. /..       /chromedriver.exe ");       Webdriver drivers=new chromedriver ();    return drivers;         } public static void Loginuser () {Webdriver driver=login.driver;         Driver.get ("Http://testAdress.com/#/login");         Driver.navigate (). Refresh ();         Sleep (1); Driver.findelement (By.xpath ("/html/body/div[1]/div[1]/div/div[2]/div[2]/div/div[1]/form/div[1]/div/div/input")         ). SendKeys (UserName); Driver.findelement (By.xpath ("/html/body/div[1]/div[1]/div/div[2]/div[2]/div/div[1]/form/div[2]/div/div[1]/         Input ")). SendKeys (password); Driver.findelement (By.xpath ("/html/body/div[1]/div[1]/div/div[2]/div[2]/div/div[1]/form/div[4]/button")). Click (); }}

Hint: If it is useful, please do not copy, because only a part of the code, not the complete class paste out!

Selenium +java multiple Common driver issues