How to use Action class in selenium

Webdriver driver=new FirefoxDriver();

driver.get("https://www.yatra.com/");

Actions actions=new Actions(driver);

WebElement ele=driver.findElemet(By.xpath("//a[@class='dropdown-toggle eventTrackable']")

actions.moveToElement(ele).perform();

driver.findElement(By.linkText("Contact Us")).click();