How to remove unnecessary blank line on code formatting in IntelliJ?

Yes. It is possible to configure the number of blank lines in the settings menu (CTRL+ATL+S): File -> Settings -> Editor -> Code Style -> Java(or Scala or whatever your language is) -> Blank Lines

Blank lines configuration


You can find and replace with regex option also ^(?:[\t ]*(?:\r?\n|\r))+. It searches all empty lines in file. You need to just replace it with empty


I use regular expression to remove extra blank line from code. Here are the instructions

  • Open Find and Replace dialog. Use shortcut CTRL+SHIFT+R.
  • In the search box type ^(?:[\t ]*(?:\r?\n|\r)){2,}. This will search for two ore more blank lines.
  • In a replace box type \n. This will replace with one blank line.

enter image description here

  • Open Reformat Code dialog and click Run. Use shortcut CTRL+ALT+L.

This works on all JetBrains IDEs. Use the screenshot as referece.


  • File >> Setting >> Editor >> Code style java >>Blank lines tab

  • You should change to 0 in code label(as picture), It would remove all unnecessary blank line when press format shortcut: ctrl + alt + L

enter image description here

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