PMD

PMD: A source code scanner

PMD is a small and fast application that was designed to scan Java source code and looks for potential problems.

PMD features:

- Possible bugs - empty try/catch/finally/switch statements

- Dead code - unused local variables, parameters and private methods

- Suboptimal code - wasteful String/StringBuffer usage

- Overcomplicated expressions - unnecessary if statements, for loops that could be while loops

- Duplicate code - copied/pasted code means copied/pasted bugs

Requirements:

- Java Runtime Environment