How to press Down Arrow key followed by “Enter” button in Selenium WebDriver?

Question

I am using Selenium Java. I need to enter value into text box and press down arrow to select suggestions and then press Enter key.

So, my question is how to press Down A

Answer 1

input_element = @driver.find_element(:id,'input_id')
input_element.send_keys(:arrow_down)

A list of special character keys can be found here