[Solved] Add single line at the end of multiple files in IntelliJ

Question

Just use Replace in Files (Edit → Find → Replace in Files, or Ctrl+Shift+R in Windows and Linux / ⌘+Shift+R in Mac) to replace this regex:

(.)\Z

with this:

$1\nThis is your line

in any files you need. That’s all.

Explanation:

The regex (.)\Z matches and captures the last character in the whole file:

And the replacement uses it to add your line after it:

$1 uses the first capture group (i.e. the previously matched character, to avoid removing it)
\n introduces a new line
This is your line is the line you want to add

You may use the File mask option to select the files you want to change:

Result:

Accepted Answer