Vertical Scroll down and scroll up in Selenium WebDriver with java

Question

Can anybody please help me out to automate scroll down functionality with WebDriver using Java?

In my case, For yahoo mail "Sign In" is getting displayed (visible) once I scroll down the mouse vertically.

Answer 1

Scrolling to an Element of a page:

((JavascriptExecutor)driver).executeScript("arguments[0].scrollIntoView();"
                                                              ,webElement);