How to correct indentation in IntelliJ

Code → Reformat Code... (default Ctrl + Alt + L) for the whole file or Code → Auto-Indent Lines (default Ctrl + Alt + I) for the current line or selection.

You can customise the settings for how code is auto-formatted under File → Settings → Editor → Code Style.

To ensure comments are also indented to the same level as the code, you can simply do as follows:

https://i.stack.imgur.com/m52kZ.jpg

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Just select the code and

on Windows do Ctrl + Alt + L

on Linux do Ctrl + Windows Key + Alt + L

on Mac do CMD + Option + L

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https://i.stack.imgur.com/BkRtD.png

Then Ctrl + Alt + L to format your file (or your selection).

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In Android Studio this works: Go to File->Settings->Editor->CodeStyle->Java. Under Wrapping and Braces uncheck "Comment at first Column" Then formatting shortcut will indent the comment lines as well.

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Ctrl + Alt + L works with Android Studio under xfce4 on Linux. I see that Gnome used to use this shortcut for lock screen, but in Gnome 3 it was changed to Super+L (AKA Windows+L): https://wiki.gnome.org/Design/OS/KeyboardShortcuts

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You can also try out Ctrl + Alt + I even though you can also use L as well.

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Solution of unchecking comment at first column is partially working, because it works for line comments, but not block comments.

So, with lines like:

/* first line
 * second line
 * ...
 */

or

// line 1
// line 2
// line 3
...

they are indented with "Auto reformat", but lines like:

/* first line
   second line
   ...
 */

the identation will not be fixed.

So you should:

add * or // before each line of comments

then uncheck Keep when reformatting -> comment at first column

and Auto reformat.

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