How to find total number of iFrames on a webpage

//By finding all the web elements using iframe tag

List<WebElement> iframeElements = driver.findElements(By.tagName("iframe"));

System.out.println("The total number of iframes are " + iframeElements.size());

//By executing a java script

JavascriptExecutor exe = (JavascriptExecutor) driver;

Integer numberOfFrames = Integer.parseInt(exe.executeScript("return window.length").toString());

System.out.println("Number of iframes on the page are " + numberOfFrames);