java - What are these extra methods in the Selenium Webdriver code? -

so record steps of website using selenium ide , export using java /junit 4 / webdriver . , open in eclipse , find 4 methods in code. don't understand purpose of methods, don't deal alert windows or finding element. here methods

 @after public void teardown() throws exception { driver.quit(); string verificationerrorstring = verificationerrors.tostring(); if (!"".equals(verificationerrorstring)) {   fail(verificationerrorstring); } }  private boolean iselementpresent(by by) { try {   driver.findelement(by);   return true; } catch (nosuchelementexception e) {   return false; } }  private boolean isalertpresent() { try {   driver.switchto().alert();   return true; } catch (noalertpresentexception e) {   return false; } }  private string closealertandgetitstext() { try {   alert alert = driver.switchto().alert();   string alerttext = alert.gettext();   if (acceptnextalert) {     alert.accept();   } else {     alert.dismiss();   }   return alerttext; } {   acceptnextalert = true; } 

the last 3 methods quit easy understand does, please tell me teardown() does. ok can remove these functions , keep required part.

you want keep setup() , teardown() methods. setup() method used start browser session before running test, , teardown() used cleanly exit when test has completed.