Test case not running iin selenium webdriver - selenium-webdriver

Question

I tried to use the following code to open a URL in my local system. But I get error message as shown in screen shot.
Code
package First_test;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
public class first_case {
public static void main(String[] args) {
// TODO Auto-generated method stub
// Create a new instance of the Firefox driver
WebDriver driver = new FirefoxDriver();
//Launch the Website
driver.get("http://127.0.0.1:3000");
// Print a Log In message to the screen
System.out.println("Successfully opened the website ");
// Close the driver
driver.quit();
}
}
error message
What shall I do to solve this problem? Thanx!

Answer 1

You need to install gecko driver. A brief introduction about it and how to install gecko driver can be found in following link. Hope this helps!
Gecko Driver is the link between your tests in Selenium and the Firefox browser
http://toolsqa.com/selenium-webdriver/how-to-use-geckodriver/

Answer 2

I installed gecko driver from github and put it in the folder location of my workplace and it worked!
working result

Answer 3

Download geckodriver and use this code:
System.setProperty("webdriver.gecko.driver", "E:/software and tools/geckodriver.exe");
WebDriver driver= new ChromeDriver();
//Launch the Website
driver.get("http://127.0.0.1:3000");
// Print a Log In message to the screen
System.out.println("Successfully opened the website ");
// Close the driver
driver.quit();