PMD

Developer's DescriptionBy Dale AnsonAnalyze and detect unused variables and blocks.PMD is a Java source code analyzer. It finds unused variables, empty catch blocks, and unnecessary object creation. PMD scans Java source code and looks for potential problems like: possible bugs: empty try, catch, finally, or switch statements, dead code: unused local variables, parameters, and private methods, suboptimal code: wasteful String or StringBuffer usage, overcomplicated expressions: unnecessary if statements or for loops that could be while loops, and duplicate code: copied or pasted code.