FirefoxDriverExample.java

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

public class FirefoxExample {

    final static String PROJECT_PATH = System.getProperty("user.dir");

    public static void main(String[] args) throws IOException {

        System.setProperty("webdriver.gecko.driver", PROJECT_PATH+ "/src/main/resources/geckodriver");

        FirefoxOptions options = new FirefoxOptions();
        options.setAcceptInsecureCerts(true);

        FirefoxDriver driver = new FirefoxDriver(options);
        driver.get("https://www.google.com");
    }
}