Delete all spaces and tabs around point in intelliJ?

Question

In emacs, there's an action called just-one-space which is binded to Meta+Space .

It is used to

Delete all spaces and tabs around point, leaving one space (or N spaces).

I used this action a lot in emacs and it's quite useful for me.

I was wondering whether there are also such actions in intelliJ?

(The use case is like this:

      Line1
      Line2

when I use Ctrl+k at the end of Line1 twice, the text becomes this:

      Line1                Line2

I need several actions to delete the spaces to make it like this:

      Line1 Line2

Answer 1

IntelliJ can use regex, so

Search: \b\s+\b
Replace: <space>

Answer 2

刚发现Join Lines可能就是我需要的。