To handle separate tabs/windows we have to switch to that tab 
• Web driver handles one page/html document at a time. 
• To control another tab, we always need to switch 
• To be able switch we need to get the window handle first using 
getWindowHandles() method driver.switchTo.window(String) // à window handle 
//for each loop : driverGetWIndowHandles: 
Driver.switchTo.window(“handle”) 
Ifdriver.getTitle==expectedtitle;
Break;