High Quality Content by WIKIPEDIA articles! Apache Click is a modern page and component oriented web application framework for the Java language and is built on top of the Java Servlet API.It is a free and open-source project distributed under the Apache license and runs on any JDK installation 1.5 or later.Click graduated into an Apache top-level project in November 2009.The main design goals are simplicity, ease of use, performance and scalability. To achieve these goals Click leverages an intuitive page and component oriented design.