How to convert a page into Document (Java) format using selenium webdriver?

Question

Java

i have code
System.setProperty("webdriver.gecko.driver", "C:\\geckodriver.exe");
WebDriver driver = new FirefoxDriver();
String baseUrl = " https://google.com ";
driver.get(baseUrl);
String str = driver.getPageSource();
System.out.println(var);
System.exit(0);
driver.close();

how can i make str be a Document? or element?

Answer 1

What for to you to do from str Document?
Why not just do this: WebElement element = driver.findElement(By.className("class"));
?