How to make Intellij show Eclipse like API documentation on mouse hover

intellij-idea

One of the best feature of Eclipse is that you can learn while coding as it shows the documentation right in the editor by hovering over an API. I really missed that feature in Intellj. As I am new to this platform, may be there is a trick to get that feature that I am not aware of. I appreciate any tip regarding this.


Solution 1:

Simple docs will appear if you hold ctrl when you hover. To make proper docs appear just on hover (like eclipse) in IntelliJ v14.0:

File > Settings... > Editor > General > [Other]

Then at the very bottom there is an option: "Show quick documentation on mouse move":

enter image description here

The docs will now appear on hover:

enter image description here

Solution 2:

You can edit the idea.properties found in the bin folder of IntelliJ application and add this line:

auto.show.quick.doc=true

This will give you the JavaDoc when hovering over a variable:

enter image description here

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