Type the following code. What the following script does is simply opens a new Chrome browser and navigates to the URL http://www.google.com:

public class FirstTest {
    public static void main(String[] args) {
        System.setProperty("webdriver.chrome.driver",
                       "C:\SeleniumWD\src\main\resources\chromedriver.exe");
        WebDriver driver = new ChromeDriver();
        driver.get("http://www.google.com");
    }
}

Right-click the file and click Run as Java Application and hurrah! A chrome browser opens and http://www.google.com gets loaded.

You have successfully created your first Selenium Script.