what is interface
Interfaces specify what a class must do. It is the blueprint of the class. It is used to achieve total abstraction. We are using implements keyword for interface. Basic statement we all know in Selenium is WebDriver driver = new FirefoxDriver(); WebDriver itself is an Interface. So we are initializing Firefox browser using Selenium WebDriver. It means we are creating a reference variable of the interface and creating an Object. So WebDriver is an Interface and FirefoxDriver is a class.