checkstyle
已回答
Is there any other way to plug in my checkstyle on intellij IDEA 18.1?
They cut the "other setting" option from the settings...
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There are third-party Checkstyle plug-ins available that you can use in IntelliJ IDEA.
and if I need to use my own checkstyle?
You can use your own configuration, see https://github.com/jshiell/checkstyle-idea.