In Eclipse, when hovering over a method, variable, etc. a tooltip is displayed with the corresponding JavaDocs. Is there such a feature in IntelliJ?
For IntelliJ 13, there is a checkbox in Editor's page in IDE Settings
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.
EDIT: For IntelliJ Ultimate 2017.2, aka IntelliJ IDEA 2017.2.3, there are actually two options:
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.
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
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.
It is possible in 12.1.
Find idea.properties in the BIN folder inside of wherever your IDE is installed, e.g. C:\Program Files (x86)\JetBrains\IntelliJ\bin
Add a new line to the end of that file:
auto.show.quick.doc=true
Start IDEA and just hover your mouse over something:
After doing CTRL+Q, you can
Pin the tooltip (top right corner)
Check Docked Mode (under gear in top right after pinning)
Size as desired
Click icon for Auto show documentation for selected item
Then when you move your cursor, the documentation will appear in this box. It costs you a little screen real estate, but I find it's worth it.
I'd post a screenshot but SO won't let me post images.
For Intellij 15, use the checkbox in File > Settings > Editor > General option Show quick documentation on mouse move.
You can also get there by typing "quick" or something similar in the search box:
In Intellij13, you can use Editor configuration like below:
IntelliJ IDEA 14.0.3 Ultimate: Press Ctrl+Alt+S, then choose Editor\General choose Show quick domentation on mouse move
Tips: Look at the top right conner (gear icon) at JavaDoc pop-up window, You can choose:
- Show Toolbar
- Pinded Mode
- Docked Mode
- Floatting Mode
- Split Mode
Adding on to what ADNow said. On the Macintosh:
Right click on IntelliJ IDEA 12
Click on the Show Package Contents menu option
Open the bin folder
Open idea.properties
Add the line:
auto.show.quick.doc=true
The easiest way, at least for me, was:
Ctrl+Shift+A
Type: show document
Show quick documentation on mouse move (set it to ON)
From IntelliJ Ultimate 2018.1.5, aka IntelliJ IDEA 2018.1.5, till 2019.3 , there are actually two options under File -> Preferences:
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.
In Editor > General > Code Completion (sub-item) > Auto-display documentation in 1000 ms
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.
In IntelliJ IDEA 14, it has moved to: File -> Settings -> Editor -> General -> "Show quick doc on mouse move"
In Intellij 2019, I did: File > Settings > Editor > General option Show quick documentation on mouse move.
File-->Settings-->Editor
Check "Show quick doc on mouse"
Now when you put the mouse over a method a tooltip with the documentation will appear. Sometimes the tooltip size is too small and you will have to resize it moving the mouse down to the bottom of the tooltip.
IDEA has "find action":
Open "Help" menu, type "doc", move cursor to "Quick Documentation" it will be highlighted.
Also "find action" can be called from hot key (you can find it in settings->hotkeys)
On mac in IntelliJ Ultimate (trial) 14 I have mine under Settings > Editor > General > Code completion. The tooltip short is F1 on my laptop.
It's called "Autopopup documentation in (ms):"
A note for Android Studio (2.3.3 at least) users, because this page came up for my google search "android studio hover javadoc", and android studio is based on Intellij:
See File->Settings->Editor->General: "show quick documentation on mouse moves",
rather than File->Settings->Editor->General->Code Completion
"Autopopup documentation in (ms) for explicitly invoked completion"
and "Autopopup in (ms)", which has been previously talked about.
I tried many ways mentioned here, especially the preference - editor - general - code completion - show documentation popup in.. isn't working in version 2019.2.2
Finally, i am just using F1 while caret is on the type/method and it displays the documentation nicely. This is not ideal but helpful.
In 2020.1 there is in editor javadocs rendering has been added. Screen shots borrowed from intellij documentation.
On my IntelliJ U on Mac I need to point with cursor on some method, variable etc. and press [cntrl] or [cmd] key. Then click on the link inside popup window which appeared to see JavaDocs
All of the above methods are useful but one basic thing missing you need to have src.zip in your JDK (C:\Program Files\Java\jdk1.8.0_171). I assumed it comes preinstalled but for some reason, it was not present in my installation. Another thing to check is if your project is using the specified (1.8.0_171 in this case) JDK.
The answer is CTRL + P (NOT CTRL + Q)
Someone else posted this answer on JetBrains forum:
The idea is a different IDE. Try to discover its features and try to make the best of it, rather than trying to emulate whatever you used before.
For the most part, Idea has very high usability (much better than Eclipse IMHO) and is streamlined for supporting code editing as best as possible (rather than relying on wizards too much for example).
Javadoc: Ctrl-Q
A quick view of the implementation: Ctrl-Shift-I
Show context: Alt-Q
Show parameters (in a method call): Ctrl-P
Show error description. Ctrl-F1
... plus many more shortcuts to navigate in code and different idea views.
I think it rather nice that you can see just the specific bit of information you are interested in with a simple keystroke.
Have a look at the menus which will also show the possibly modified shortcuts for your keymap.
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Avatar
Jens Voß
Created June 12, 2008, 09:26
And, elsandros, in addition to what Stephen writes: Since you seem to be interested in IDEA's keyboard shortcuts, I highly recommend the "Key Promoter" plugin which helps you memorize the relevant shortcuts quickly.
Also very useful is the "Goto Action" feature, invoked by Ctrl-Shift-A. In the popup, you can enter a keyword (e.g. "Javadoc"), and the IDE tells you the available actions matching your search, along with keyboard shortcuts and the containing action groups (which often also give you a clue about how to navigate to the action using the menu).
Related
just a dumb question but its hard to search because there are so many topics about eclipse auto complete and its hard to find something matching to my problem.
so there problem is:
If i write :
"MyClass MyVarName" and then hit space, (to add the " = new MyClass()")
Eclipse automatically adds : "MyClass MyVarName_MyClass " or something like that to the variable-name..... (just without underscore.... stackoverflow just wont to mark as bold else...)
That is really annoying, and because i imported the eclipse configuration of a co-worker... I really don't know how to disable....
thanks in advance
//EDIT:
It seems to be the same effect as i type "MyC" and then press space, it also completes the "MyClass" and not add just the space... its like hitting enter. but i dont want to automplete on space...
i also didn't found a custom key option on space or else.... :(
In Window->Preferences->Java->Editor->Content Assist:
check the box at "Disable Insertion triggers except 'Enter' ".
I've found all other answers to also disable the auto-suggestion features of Eclipse, which are rather useful in my opinion.
Window -> Preferences -> Java -> Editor -> Content Assist -> Advanced: In the top list box, uncheck "Java Non-Type Proposals", "Java Proposals" and "Java Proposals (Task-Focused)".
I cannot find a way to solve it decently.
So, just, press Esc before press Space.
Look into
Window -> Preferences -> Java -> Code Style
There you can see Conventions for variable names. Make sure all prefixes and suffixes are empty. Also check in
Window -> Preferences -> Java -> Editor -> Content Assist
Looks to me that you might have the Control key pressed without knowing it. Happens sometimes on laptops with Fn key that Fn+Ctrl kind of "locks" the Ctrl. I conclude this because Eclipse auto-complete feature should not work on pressing Spacebar only. Normally you should get the effect you describe only by pressing CTRL+Spacebar. Thus, try pressing Fn+Ctrl to unlock the "pressed down" Ctrl key and then you should be fine.
In Window -> Preferences -> Java -> Editor -> Content Assist, there is the option "Auto Activation". If you have it checked, it will activate even if you don't press ctrl and you'll see that behaviour. Uncheck it and you'll only get content assist when you use ctrl+space.
S!
My suggestion, and what I do, is similar to GreenEyed's approach but instead of disabling auto activation put it to a reasonable value for the delay, like 3000 (3 seconds).
I had plain Eclipse IDE for Java EE Developers and installed the Spring plugin to try it out. I didn't like it and didn't use it so I uninstalled it. After uninstalling, it still had the setting that you describe. So annoying!
After search for hours, I finally found out how to disable it.
Windows > Preferences > Java > Editor > Content Assist
Set Auto activation triggers for Java to: .
That's all that's necessary.
If you want to restore other Eclipse defaults regarding content assist:
Set Auto activation delay to 200.
I had previously disabled Java Proposals, Java Proposals (Task-Focused), and Java Type Proposals, as others recommended, but these should actually stay checked, so I re-enabled them.
Yesterday I installed IntelliJ IDEA IDE and so far I like it (I used to use NetBeans which I like and Eclipse which I avoid).
When it comes to code editor I would like to change javadoc popup behavior in 2 ways:
I set javadoc popup to show after one second (Settings -> Editor -> Code completion -> Autopopup documentation in). However it only works when I press Ctrl + Space for code completion. When code completion pops up automatically javadoc window does not show. And I want it to. Simply, it is the same issue as the one addressed here: http://youtrack.jetbrains.com/issue/IDEABKL-6124
The javadoc popup window hides current line (it pops just over code completion window). It would be better if it popped over actual line (with caret) without hiding it.
Is there any plugin that allows such a customisation? Or any setting that I missed?
EDIT 1:
Here is the picture explaining situation 2:
As you can see because of javadoc popup I cannot see what I am currently writing - part of the word "System."
The problem with JavaDoc hiding the code is caused by the low horizontal resolution when the popup cannot fit on the right. Normally displays have enough horizontal pixels to fit it. In any case it's still a bug that can be fixed by displaying the popup above the current line of code.
I've submitted this bug to YouTrack, feel free to vote.
I'm talking about the lines that are in the same visual space as my break points. What do those do, and why are popping up and covering my break points?
I am in the Java perspective, i'm looking at the code (code editor view), the debugger is not running, my application is not running. My eclipse is Helios. and I've got RTC tools installed on it.
Thx, you guys are awesome.
EDIT: arrows are not triangles. I wasn't talking about the warnings :P
EDIT #2: a snapshot added:
The yellow arrows show up next to search results for me. If you go to the search tab and delete the results they should go away.
You can get rid of them by going to Preferences > General > Editors > Text Editors > Annotations, then look for "Search Results" and uncheck "Vertical Ruler".
This is what they look like.
Note that it's pointing at a blank line. I also did a search for some string and it did not affect the arrow. I have been trying to get "Extract Android String" to work from a keyboard shortcut (Mac OS) and may have found some other implicated command.
Edit: I see it now. Eclipse has more than one search command. This is not from command-F (find/replace). It is from control-H (search). There's a Search item on the menu bar as well.
not really sure what you are looking at...
for me, the little orange looking lines are on the right - and they represent compiler warnings. - you can hover your mouse over them for messages.
when you double click a word in the code, then more lines appear - where that word is also located in the file.
Those are warnings. If you click on them, useful suggestion will be shown to disappear them.
Is there a way for Eclipse that will pop-up the javadoc related to the code when I press, say, Ctrl + Shift + Space, as NetBeans does ? I don't like it to open attached javadoc in external or internal web browser.
You can use F2 shortcut to show tooltip/javadoc description for the element at the cursor.
It happens in eclipse when your mouse is over the interesting element.
Additionally you can open javadoc view, so the javadoc will appear into this view. It is even more convenient especially if the description is long and cannot be viewed without scrolling.
Aren't i supposed to be able to do this? Folding is enabled in the Java preferences, but no +/- button appears next to comments. I can fold imports and classes and methods, but not comments. Also, checking the Comments box in "Initially fold these elements" does nothing.
It could be a side-effect of another option setting the code folding for a plugin you don't have.
See bug 153449 for an example (written at the time when Mylyn was called Mylar):
I can enable and disable folding, and I see my editor margin increase/decrease
in size providing a gutter for the code folding markers to appear in, but they
simply aren't there. Also, all of the menu options to expand all and collapse
all are there and enabled but they do nothing.
Actually, I just saw this in my exported preferences:
/instance/org.eclipse.jdt.ui/editor_folding_provider=org.eclipse.mylar.java.ui.editor.foldingprovider
And I don't have Mylar installed. I'm betting this is the problem. I'll try
to get rid of it and see what happens.