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By agreement mod-circulation uses Google Java Style, this article describes how to configure CheckStyle plugin for Intellij IDEA.

Install plugin

1. Navigate to Settings → Plugins;
2. Search for CheckStyle;
3. Click install and then restart IDE.

Configure plugin

1. Go to Settings → Checkstyle;
2. Mark Google Checks as Active it means that these rules will be used by default;
3. It is recommended to set Scan Scope to Only Java sources (Including tests), so the plugin will check production code as well as test files;

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                    Pic. 1: CheckStyle plugin configuration

Check a file

1. Open a file (e.g. RequestCollectionResource.java).
2. Click on the CheckStyle panel at the right bottom of window;
3. Click 'Check Current File' icon ;
4. Report should be displayed as following:

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