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IntelliJ show JavaDocs tooltip on mouse over

Tags:

java

eclipse

intellij-idea

ide

In Eclipse, when hovering over a method, variable, etc. a tooltip is displayed with the corresponding JavaDocs. Is there such a feature in IntelliJ?

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Steve Kuo Avatar asked Jul 07 '11 18:07

Steve Kuo

People also ask

How do I show Javadoc in IntelliJ?

View Javadocs in the editorHover the mouse over the necessary symbol in the editor. Place the caret at the symbol and press Ctrl+Q (View | Quick Documentation). Press Ctrl+Q again to open this documentation in the Documentation tool window.

How do I enable tips in IntelliJ?

You either start with pressing Alt+J (and then IntelliJ IDEA selects a symbol at caret), or you can just select something as you normally would.

How do I get to method definition in IntelliJ?

In IntelliJ IDEA, you can see where and how symbols, such as tags, classes, fields, methods, or functions are defined in your project. For this purpose, the IDE features the Quick Definition popup. To view definition of a symbol, select it in the editor and press Ctrl+Shift+I (or click View | Quick Definition).

2 Answers

For IntelliJ 13, there is a checkbox in Editor's page in IDE Settings

enter image description here

EDIT: For IntelliJ 14, the option has been moved to Editor > General page. It's the last option in the "Other" group. (For Mac the option is under the menu "IntelliJ Idea" > "Preferences").

EDIT: For IntelliJ 16, it's the second-to-last option in Editor > General > Other.

EDIT: For IntelliJ Ultimate 2016.1, it's been moved to Editor > General > Code Completion. enter image description here

EDIT: For IntelliJ Ultimate 2017.2, aka IntelliJ IDEA 2017.2.3, there are actually two options:

  1. In Editor > General > Other (section) > Show quick documentation on mouse move - delay 500 ms
  • Select this check box to show quick documentation for the symbol at caret. The quick documentation pop-up window appears after the specified delay.
  1. In Editor > General > Code Completion (sub-item) > Autopopup documention in 1000 ms, for explicitly invoked completion
  • Select this check box to have IntelliJ IDEA automatically show a pop-up window with the documentation for the class, method, or field currently highlighted in the lookup list. If this check box is not selected, use Ctrl+Q to show quick documentation for the element at caret.
  • Quick documentation window will automatically pop up with the specified delay in those cases only, when code completion has been invoked explicitly. For the automatic code completion list, documentation window will only show up on pressing Ctrl+Q.

EDIT: For IntelliJ Ultimate 2020.3, the first option is now located under Editor > Code Editing > Quick Documentation > Show quick documentation on mouse move

like image 179
vikasing Avatar answered Sep 22 '22 10:09

vikasing

Up until IntelliJ version 11, no, not just by hovering over it. If the cursor is inside the method- or attribute name, then CTRL+Q will show the JavaDoc on *nix and Windows. On MacOSX, this is CTRL+J.

Quote: "No, the only way to see the full javadoc is to use Quick Doc (Ctrl-Q)." -- http://devnet.jetbrains.net/thread/121174

EDIT

Since IntelliJ 12.1, this is possible. See @ADNow's answer.

like image 31
Bart Kiers Avatar answered Sep 23 '22 10:09

Bart Kiers
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