IntelliJ: Highlight the type of a variable on hover

Question

In Eclipse, if you place the cursor on any variable, a small popup box will appear containing the type (class) of this variable, how can I have the same in IntelliJ?

[like this?](http://stackoverflow.com/a/7858871/2817802) – Baby May 15 '14 at 09:03 — Baby, May 15 '14 at 09:03

score 28 · Accepted Answer · answered May 15 '14 at 09:04

28

By placing cursor on a variable and hitting Ctrl-Q you'll find all the documentation regarding this variable, including type.

answered May 15 '14 at 09:04

nikis

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`Cmd + J` on mac – PlsWork Sep 15 '19 at 12:32
I came here looking for the same thing for PyCharm and Ctrl+Q also works there :) – Dalmiro Granas Mar 26 '20 at 16:39

score 7 · Answer 2 · answered Jan 11 '16 at 14:08

7

For IntelliJ 15, the "Quick Definition" option worked for me. On Macs pressing Command-Y is exactly what I was looking for.

answered Jan 11 '16 at 14:08

Jeff

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Either "Quick Definition" or "Quick Documentation" (F1) works for me. – anonymous Feb 15 '20 at 10:07

IntelliJ: Highlight the type of a variable on hover

2 Answers2