Sublime Text popularized multiple selections in editors. I use IntelliJ Idea for most of my coding. When I switched to IntelliJ Idea from Eclipse a few years back I was super happy that it supported multiple selections! But I have noticed that not everyone is aware of this feature.

Here is a quick demo of how it works

The good thing about this feature in Idea is that it supports all editor features like code completion.

PS. The tools used for the above screen capture is ScreenToGif and Presentation Assistant plugin for Idea.