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Intellij IDEA: Configuring the code style

IntelliJ’s default style is mostly compliant with ours but it uses a different import order from ours but some tweaks may be needed.

Legend: basic tweak | intermediate tweak | advanced tweak

Tweak: switch-case style

1. Go to File → Settings…​ (Windows/Linux), or IntelliJ IDEA → Settings…​ (macOS).
2. Click on Editor → Code style→ Java (see the screenshot below).
   
3. Click on the Wrapping and Braces tab and un-tick the Indent 'case' branches option (as shown in the screenshot above).

Tweak: import order

1. Go to File → Settings…​ (Windows/Linux), or IntelliJ IDEA → Settings…​ (macOS).
2. Select Editor → Code Style → Java.
3. Click on the Imports tab to set the import order.
   • For Class count to use import with '*' and Names count to use static import with '*': Set to 999 to prevent IntelliJ from contracting the import statements.
   • For Import Layout: The order is:
     

Tweak: Auto-remove trailing spaces

You can configure Intellij to automatically strip trailing white space in code lines, as follows:

1. Go to Settings.
2. On the left side of the dialog, click on Editor -> General.
3. On the right side, scroll to the On Save section.
4. Change Remove trailing spaces on: to Modified lines.

More useful settings

The tweaks given above are specific to code style. A few more useful settings (not related to the code style) can be found here.