Intellij IDEA show javadoc automatically

Question

When I am coding at Netbeans it autocompletes the code and show Javadocs. However when I am using Intellij IDEA if I click Ctrl+Space I can see the auto-complete and if I click Ctrl+Q I can see the javadoc seperately.

Is it possible to see the Javadoc of element whenever I see auto-complete or click Ctrl+Space at Intellij IDEA as like Netbeans?

On Window click alt+tertiary-mouse-button on a symbol in question to open javadoc insight. — Nico, Jun 15 '16 at 07:18
Possible duplicate of [IntelliJ tooltip shows JavaDocs](https://stackoverflow.com/questions/6615516/intellij-tooltip-shows-javadocs) — dimo414, Jul 10 '17 at 23:24

score 167 · Accepted Answer · edited May 23 '17 at 12:26

167

Settings | Editor | General |Code Completion | Autopopup documentation in (ms).

UPDATE: latest versions have an option to show JavaDoc on mouse move.

edited May 23 '17 at 12:26

Community

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answered Oct 28 '11 at 21:13

CrazyCoder

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It's OK. When I click ctrl + space it shows both code completion and javadoc. However when I don't click ctrl + space it autocomplets but doesn't show javadoc? – kamaci Oct 29 '11 at 08:07
Yes, this behavior is by design, when automatic completion is invoked, JavaDoc is not shown. – CrazyCoder Oct 29 '11 at 09:50
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It would be nice if it was possible to see both javadoc and code completion, thanks. – kamaci Oct 29 '11 at 17:17
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I added it as a request: http://youtrack.jetbrains.net/issue/IDEA-76223?projectKey=IDEA – kamaci Oct 29 '11 at 17:31
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@kamaci : it works also without code completion, on mouse over : see http://stackoverflow.com/a/22759295/1677594 (*show quick doc on mouse move*) – Guillaume Husta May 13 '14 at 13:07
Still accurate ten years later, if someone's wondering. – mcont Jan 21 '21 at 11:01

Tonatio · Answer 2 · 2015-03-18T07:52:24.340

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Show Javadoc in IntelliJ IDEA 14:

When you write code:

File -> Settings -> Editor -> General -> Code Completion -> Autopopup documentation in (ms)

It's only available when you press CTRL+SPACE It's more usable if you select the pin icon when it popups. The documentation window will be added to the tabs on the right. Later on I recommend to resize the window and to uncheck the Pinned property.

On mouse hover:

File -> Settings -> Editor -> General -> Show quick documentation on mouse move

edited Mar 18 '15 at 07:52

answered Feb 09 '15 at 12:15

Tonatio

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The idea of pinning it to the side of the window is very useful – smac89 Feb 16 '15 at 21:20

score 14 · Answer 3 · edited Jul 23 '14 at 06:54

14

File -> Settings -> Editor -> Code completion.

Check Autopopup documentation in (ms) and choose delay.

edited Jul 23 '14 at 06:54

Lukasz Stelmach

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answered Oct 28 '11 at 21:14

Tomasz Nurkiewicz

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Intellij IDEA show javadoc automatically

3 Answers3

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