- ``Maven``:
https://github.com/checkstyle/checkstyle/blob/master/src/main/resources/google_checks.xml
- ``Eclipse``:
- https://code.google.com/p/google-styleguide/source/browse/trunk/eclipse-java-google-style.xml
+ https://github.com/google/styleguide/blob/gh-pages/eclipse-java-google-style.xml
- ``IntelliJ``:
- https://code.google.com/p/google-styleguide/source/browse/trunk/intellij-java-google-style.xml
+ https://github.com/google/styleguide/blob/gh-pages/intellij-java-google-style.xml
- `How to set Checkstyle up in IntelliJ old wiki page <https://wiki-archive.opendaylight.org/view/How_to_set_Checkstyle_up_in_IntelliJ>`__
PMD Copy/Paste Detection (CPD)