How can we create a new Firefox profile for Selenium WebDriver

Question

If I write something similar to this:

FirefoxProfile ffprofile = new FirefoxProfile(new File("D:\\Selenium"));

Am I creating a new Profile? Because I'm not able to find the new profile in Firefox's Profile section. And, if that's not how you do it, then can someone tell me how to create a new profile? 

Answer 1

Okay so first of all, in the code you've used above, your not creating a new Firefox Profile. Your just creating a new object instance of Firefox profile class. And moreover your not creating a profile for firefox using Selenium, but instead your creating a Firefox profile for your WebDriver from the already existing profiles in Firefox.

FirefoxProfile ffprofile = new FirefoxProfile(new File("D:\\Selenium"));
WebDriver driver = new FirefoxDriver(ffprofile);

When you execute this command, a new object of Firefox profile will be instantiated and the profile setting which will get imported will be those settings saved in the file in the mentioned location: "D:\\Selenium". 
At this point, do note that you are using an existing profile and not creating a new profile. Selenium cannot do it for you.
If you want to create a new profile, then follow this documentation: https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles