What are the pre-requisites to writing automation scripts in Selenium? Obviously, you need the tools first. Additionally you need to finalize the programming language you will be using to write test scripts and install the associated IDE. As ‘Java’ is the most popular & widely used programming language across the world (both for development & automation testing) – we will be focusing on writing scripts in Java using Selenium. For that first you need to have the ‘Java Development Kit’, Eclipse IDE and Selenium WebDriver. Let’s start with installing ‘Java Development Kit’, popularly known as JDK.