How to remove unnecessary blank line on code formatting in IntelliJ?
Intellij IdeaPhpstormWebstormJetbrains IdeGolandIntellij Idea Problem Overview
Is it possible to remove empty/blank lines using code formatting in Intellij IDEA?
Intellij Idea Solutions
Solution 1 - Intellij Idea
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
Solution 2 - Intellij Idea
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File >> Setting >> Editor >> Code style java >>Blank lines tab
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You should change to 0 in code label(as picture), It would remove all unnecessary blank line when press format shortcut: ctrl + alt + L
Solution 3 - Intellij Idea
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
Solution 4 - Intellij Idea
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.
- Open Reformat Code dialog and click Run. Use shortcut CTRL+ALT+L.
This works on all JetBrains IDEs. Use the screenshot as referece.
Solution 5 - Intellij Idea
Just in case it helps someone using newer versions of Intellij, in Intellij IDEA 2016.2.4 it is File -> Other Settings -> Default Settings -> Editor -> Code Style -> Java(or Scala or whatever your language is) -> Blank Lines
Solution 6 - Intellij Idea
For those trying to remove blank lines at the end of the file, this became a feature as of August 2020.
The proper place to configure this action is under Settings|Editor|General|On Save. Check "Remove trailing blank lines"