Jenkins (http://jenkins-ci.org) is a rm favorite in the continuous integration (CI) world and is the basis for some cloud services (for example: CloudBees—https:// www.cloudbees.com). It is very widely used and no section on continuous integration would be complete without mentioning it.
A basic Jenkins install should be pretty simple; you just need an application server that can host WAR les. One of the most commonly used application servers is Apache Tomcat, and the install is pretty simple. If you have a working Tomcat install, then all you need to do is drop the WAR into the webapps directory. Tomcat will do the rest for you.
Let's have a look at how we can set up a build in Jenkins that will enable us to run our tests.