How to show the result on Tooltip while running java file - IntelliJ IDEA

Question

In this video , Venkat Subramaniam is running simple java file and he is able to see the result on screen as the given below image. Does anybody know which tool he is using ?

Answer 1

Its actually a wonderful feature, but unfortunately this only work for Textmate.

Here you could find how to set it up for Textmate: https://www.ivonet.nl/2017/11/07/textmate-get-run-output-as-tooltip/

For IntelliJ IDEA there no such thing. But, a one guy has tried to do it in InteliJ Idea with a plugin which is available at https://github.com/jcraane/intellij-tooltip-runner . But, it is outdated and not working in recent releases.