Classes with high Cyclomatic Complexity measurements.
Duplicate code—Copied/pasted code can mean copied/pasted bugs, and decreases maintainability.
FindBugs is an open source program looks for bugs in Java code.It uses static analysis to identify hundreds of different potential types of errors in Java programs.
Potential errors are classified in four ranks: (i) scariest, (ii) scary, (iii) troubling and (iv) of concern.
This is a hint to the developer about their possible impact/severity. FindBugs operates on Java bytecode, rather than source code.
The software is distributed as a stand-alone GUI application.