PMD scans Java source code and looks for potential problems like: * Unused local variables * Empty catch blocks * Unused parameters * Empty ‘if’ statements * Duplicate import statements * Unused private methods * Classes which could be Singletons * Short/long variable and method names PMD has plugins for JDeveloper, JEdit, JBuilder, NetBeans/Sun ONE Studio, IntelliJ IDEA, TextPad, Maven, Ant, Eclipse, Gel, and Emacs.
