Eclipse with Java wont display matching variables - java

Hey guy,
I haven't let this get to me till now. My Eclipse used to show me where I used other global and local variables when I clicked on one of them. It doesn't anymore. I looked at General>Appearance>Colors and Fonts. In the Java folder I find something that looks like what I want. It's the Colored Labels - match highlight. The description says: The background color used to highlight matches when colored labels in Java views are enabled. I looked for that in the Java> How that's so weird I can't find it again as I'm writing this message. Anyway I guess that's what I'm looking for. Enabling the colored labels in Java. Where is that?

To access to your variable location: you have to click on your variable and maintain the "ctrl" hitted.
for color: right click in your java class, go to "open with" then select java editor, if the color's problem persist go to Windows>preferences>Java>Editor ther click "restore default" or specify your editor, then click ok.
Hope that my intervention helps you.

I tried window -> preferences -> java -> editor -> mark occurrences -> and selected all options.
Now it works.

Related

Sublime Text Sidebar Highlighting Changed Row

After working on some javascript and installing some packages (Babel, Emmet, JsPrettier, Sublime Linter, Sublime Linter-eslint) and experimenting with Github, the row that I changed gets a yellow highlight on the side bar. This happens even for code (even other languages like Java) that I never used github with, which is frustrating.
Does anyone know how to disable this?
The yellow highlighting in the sidebar (it's not actually sidebar, it's called the gutter region) is an example of the incremental diff functionality of Sublime Text, which is used to track modifications done to a file. To disable that, you can to go to command palette (using ctrl+shift+p) & then type Preferences: Settings. In the right hand side of the newly opened window, you'd need to add mini_diff: false. That should disable showing all those highlights in the gutter.

How to get the suggestions in a the box after using the DOT symbol in Eclipse

Thread.sleep(1000)
In this I am not getting the suggestion box option like SLEEP after putting the dot symbol, this is just one example like this I am not getting suggestion box where ever it should be display.
NOTE: I am getting this option only when I will be use CTRL+Shift+space
While working with Java and Eclipse to activate the suggestions you need to activate the Content Assist for Auto Activation as per the snapshot below browsing through: Window -> Preference -> Java -> Editor -> Content Assist and set the Auto Activation options as per the snapshot:

Intellij: What does the green box around my source mean? How can I disable it?

I enabled a setting by mistake in IntelliJ giving me a green outline around parts of my source:
What does this outline mean and how can I disable it again?
Go to your code's tab in Editor -> Colors & Fonts, and look for a setting with the following enabled:
Unchecking that box will disable the effect
I'm seeing this happen when it is highlighting the current scope of an item. It seems to happen when you hold down control and right click on a bit of code, but it probably depends on your keymappings. (I'm using default GNOME keymappings)
Escape seems to clear it.

Eclipse autocomplete change variable names

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.

IntelliJ show JavaDocs tooltip on mouse over

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).

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