The driver class will be designed with various get and set methods. The main setDriver method can take parameters to determine the browser or mobile type, platform to run on, environment for testing, and a set of optional preferences to allow changing driver behavior on the fly:

@SafeVarargs
public final void setDriver(String browser, 
                            String platform,
                            String environment,
                            Map<String, Object>... optPreferences)

Examples of some of the parameters of setDriver are as follows:

• browser: Chrome, Firefox, Internet Explorer, Microsoft Edge, Opera, Safari (iPhone/iPad, or Android for mobile)
• platform: Linux, Windows, Mac, Sierra, Win10 (iPhone/iPad, or Android for mobile)
• environment: Local, remote, and Sauce Labs
• optPrefs: Map of driver preferences (this will be covered later in detail)