IntelliJ IDE hover – offers nothing?

I’ve been using IntelliJ IDEA for almost a year, and I’m not aware of any popups when hovering (aside from the documentation which you already know).

Perhaps you’re looking for the “Intention Actions” popup menu. The menu can be accessed by clicking the yellow bulb or by typing (Alt + Enter) when selecting something.

Go as per below, Select Show quick doc on Mouse move on editor section.

File — >Setting —> Editor(IDE Setting) —> Show quick doc on Mouse move

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