The Checkstyle-IDEA plugin contains a copy of the Sun Checks (sun_checks.xml). It is contained in the root of the plugin's JAR file. The plugin JAR is usually located at:
- Linux: ~/.<PRODUCT><VERSION>/config/plugins/CheckStyle-IDEA/lib/checkstyle-idea-4.5.2.jar
- Windows: C:\Users\<YourUserName>\.<PRODUCT><VERSION>\config\plugins\CheckStyle-IDEA\lib\checkstyle-idea-4.5.2.jar
Version numbers may differ in your case. The part .<PRODUCT><VERSION>
should appear as something like .IdeaIC13
(for IntelliJ IDEA version 13).
Note that you should not need to find this file. You should never change it or touch it in any way. If you need to change the rules configuration, create your own rule set and use that. You may of course create your own rule set based on a copy of sun_checks.xml.