Pmd is described as 'PMD scans Java source code and looks for potential problems like:' and is an app. There are three alternatives to Pmd for a variety of platforms, including Mac, Windows, Linux, Web-based and Java Mobile apps. The best Pmd alternative is Codacy. It's not free, so if you're looking for a free alternative, you could try Codacy or FindBugs.
Automatically reviews code style, security, duplication, complexity, and coverage on every change while tracking code quality throughout your sprints.
FindBugs is a program which uses static analysis to look for bugs in Java code. It is free software, distributed under the terms of the Lesser GNU Public License. The name FindBugs and the FindBugs logo are trademarked by The University of Maryland.
Checkstyle is a development tool to help programmers write Java code that adheres to a coding standard. It automates the process of checking Java code to spare humans of this boring (but important) task. This makes it ideal for projects that want to enforce a coding standard.
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