Clover

Clover is a code coverage analysis tool. It discovers sections of code that are not being adequately exercised by your unit tests. Clover reports its findings in multiple formats for easy use by the whole team at the project level down to each line of source code. – Fully integrated with NetBeans, Eclipse, IntelliJ IDEA, JDeveloper 10g, and JBuilder – Seamless Integration with projects using Ant. Easy integration into legacy build systems with command line interface. – Accurate, configurable, detailed coverage reporting of Method, Statement, and Branch coverage – Rich reporting in HTML, PDF, XML or a Swing GUI – Precise control over the coverage gathering – Historical charting of code coverage and other metrics