Hello Folks, In this post, we will learn about a frequently asked interview question in selenium that “Why we upcast a browser driver class object to WebDriver type?”. OR, Why do we write as below: WebDriver driver= new FirefoxDriver(); WebDriver driver= new ChromeDriver (); Why not as below: FirefoxDriver driver= new FirefoxDriver(); ChromeDriver driver= new ChromeDriver (); Let’s … Continue reading Why Do We Up cast Browser Driver Class Object To WebDriver?