driver.findElement(By.cssSelector("Tag.Value of Class attribute"))

driver.findElement(By.cssSelector("input.Automation"))

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.remote.DesiredCapabilities;

public class SampleTwo {

    public static void main(String[] args) {
        
    // System Property for Gecko Driver 
    System.setProperty("webdriver.gecko.driver","D:\\GeckoDriver\\geckodriver.exe" );
        
    // Initialize Gecko Driver using Desired Capabilities Class
        DesiredCapabilities capabilities = DesiredCapabilities.firefox();
        capabilities.setCapability("marionette",true);
        WebDriver driver= new FirefoxDriver(capabilities);
        
      // Launch Website
     driver.navigate().to("https://www.testandquiz.com/selenium/testing.html");
     
    
        
    // Locate the checkbox by cssSelector and check it using click() function
     driver.findElement(By.cssSelector("input.Automation")).click();
            
     
    // Close the Browser
     driver.close();
    
    }

}