How to view JavaDoc tooltip for methods and classes in IntelliJ IDEA

IntelliJ IDEA How to view JavaDoc tooltip for methods and classes? and using shortcuts and settings to mouse over method in the code editor.

IntelliJ IDEA code completion feature that quickly sees methods and classes as well as Java documentations.

This tutorial talks about multiple ways to view the Javadoc tooltip for a method in an editor.

Please follow the following steps.

Go to File > Settings or use shortcut command Ctrl + Alt + S to open Settings Window
Select Editor > General > Code Competition
Check the Show the documentation popup in 1000 ms option as given below

Intellij Idea show mouse over Javadoc popup

Click the Apply button and Ok to close the window
Mouse over the method in the code editor
It shows a documentation popup

Let’s see How we can see documentation popups using the shortcut command.

Select the method in the code editor
use Ctrl + Q to open javadoc popup

The above approaches work in the latest IntelliJ IDEA.