How can I instantiate FirefoxDriver?

The FirefoxDriver can be instantiated as below:

WebDriver driver = new FirefoxDriver(); // Instantiate the class - org.openqa.selenium.firefox.FirefoxDriver

Sample code(Java Binding):

package tests;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;

public class FirefoxDriverSample {
	public static void main(String[] args) {
		// Instantiate the FirefoxDriver
		WebDriver driver = new FirefoxDriver();

		// Visit the Selenium-WebDriver FAQ site
		driver.get("http://seleniumwebdriverfaq.tumblr.com/");

		// Print the title of the page - It should print "Selenium-WebDriver FAQ's"
		System.out.println("Title of the page is: " + driver.getTitle());

		//Close the browser window
		driver.close();

		//Quit the driver
		driver.quit();
     }
}