Validation

File | Settings | Build, Execution, Deployment | Compiler | Validation for Windows and Linux
IntelliJ IDEA | Preferences | Build, Execution, Deployment | Compiler | Validation for macOS

Use this page to specify the validation settings for your application.

Item	Description
Validate on build	Select this check box, to have IntelliJ IDEA run the desired validators when building your project. The validation results will be shown in the Messages window, and you will be able to easily navigate through the list of issues and jump directly to problematic code fragments.
Validators	Select the validators you want to be run.
Exclude from validation	Use  (Alt+Insert) and  (Alt+Delete) to form the list of files and directories that should be excluded from validation. For directories, use the Recursively check box to specify that the corresponding directory should be excluded from validation along with all the subdirectories contained therein.