FindBugs is an open-source static code analyzer created by Bill Pugh and David Hovemeyer which detects possible bugs in Java programs.

[2][3] Potential errors are classified in four ranks: (i) scariest, (ii) scary, (iii) troubling and (iv) of concern.

There are also plug-ins available for Eclipse,[5] NetBeans,[6] IntelliJ IDEA,[7][8][9] Gradle, Hudson,[10] Maven,[11] Bamboo[12] and Jenkins.

[14] SpotBugs is the spiritual successor of FindBugs, carrying on from the point where it left off with support of its community.

[23] SpotBugs also supports all of existing FindBugs plugins such as sb-contrib,[24] find-security-bugs,[25] with several minor changes.