Any way to get IntelliJ-like autocompletion in Eclipse? - java

I'm stuck with Eclipse in one project and I would like to have autocompletion similar to that of IntelliJ - two major problems are:
Start typing and Eclipse would automatically suggest all possibilities
When there is item selected in dropdown list you can accept it not only with enter key but with dots, spacebars...


Go to Window → Preferences → Java → Editor → Content Assist.
In the column "Auto activation triggers for Java", enter this:
.qwertyuioplkjhgfdsazxcvbnm_QWERTYUIOPLKJHGFDSAZXCVBNM
Add any other keys you want. You're done. That answers your first query.
As far as second one goes, I think it already exists.


Take a look at Eclipse Code Recommenders [1] or Codetrails Connect [2]. They make Eclipse' code completion intelligent.
[1] http://eclipse.org/recommenders/
[2] http://marketplace.eclipse.org/content/codetrails-connect-community-edition/


I have to say NO. I moved from Eclipse to IntelliJ because of the intellisense and inability to make Eclipse behave like IntelliJ (or if you come from the .NET environment: inability to make Eclipse intellisense behave like ReSharper in .NET).
Do you HAVE TO work in Eclipse? I do 98% of work in IntelliJ, then convert the project into Eclipse project (IntelliJ can still access it) and finish it in Eclipse. Maybe you could try this solution.


Since Eclipse Juno, Code Recommenders Intelligent Java Proposals replaced the old JDT's Java Proposals.
It afford "Intelligent Code Completion" function, like IntelliJ did in a way.
You can get something useful through the link below:
http://code-recommenders.blogspot.jp/2012/07/code-recommenders-10-code-completion-on.html


There is something like that in Eclipse I think, certainly in the Eclipse Helios. When typing you press CTRL+SPACE, or when you typed variable name '.' will start auto-complete options.
Also here someone suggests to change auto complete delay settings to 0.
BTW you can also accept your selection with space bar, for sure.
EDIT:
Why not consider using NetBeans, my personal favourite. There you have an option to show auto-completion on start typing any Java Identifier Part. This would then look exactly as you want it. (in NetBeans Tools->Options->Editor->Code Completion, there in Language box select Java and finally check Auto Popup on Typing Any Java Identifier Part).

Related

Eclipse - Ctrl+Space Content Assist doesn't work

I have just installed the 2020-12 version of Eclipse IDE, and I simply cannot get the Ctrl+Space suggestions to work. Every time I try to use them I get an empty suggestion box.
I've already searched for this of course, and I've found many who suggest how to fix it.
https://superuser.com/questions/209752/eclipse-doesnt-autocomplete-and-find-references-anymore
Eclipse - CTRL+Space autocompletion does not work any more for Java
https://mkyong.com/java/content-assist-ctrl-space-is-not-working-eclipse/
No Default Proposals in Eclipse Juno
Eclipse/Java code completion not working
Most of these say I need the Other Java Proposals in the settings, but if you look at the image you see that that option doesn't even exist! In the image the default settings are applied but I've also tried to check every single one of those boxes and still get an empty suggestion box when I press Ctrl+Space at the end of Combi (also in the image).
Image of the issue and my settings: https://imgur.com/a/CVRRgC0

Eclipse content assist with middle letters match

Eclipse gives suggestions that starts with what I type:
But IntelliJ IDEA gives suggestions that has (in the middle or at the beginning) what I type:
I guess Eclipse Luna has the same feature (based on this presentation), but I cannot make it work. Any help?

This functionality is provided by the Code Recommenders plugin. It comes with the Eclipse Luna for Java SE, but for some reason it is not bundled in the EE version. Of course you can install it manually from the eclipse marketplace.
To activate it go to Window -> Preferences -> Code Recommenders -> Completions -> Check enable intelligent code completion. You can also select in which type of completions you are interested in. The exact feature you are looking for is called "Subwords completion processor" (and I cannot live without it :D)

I think the closest is the 'Show camel case matches' option (configured in the Preferences in Java > Editor > Content Assist).
With that enabled you have to type the first letter of each part of the name, so for 'createNamedQuery' you can type 'cNQ'

How to fix Eclipse autocomplete not working

The autocomplete of eclipse is not working now and I searched for hours but I couldn't find an answer to solve it. I haven't used it for long time then the first thing after opening it was to install SWT and windows builder even though I had swing installed. What I mean is, it is may possibly be because of some conflict caused by swt and swing(I read something about a conflict but I don't if this is possible).
Strange thing is it doesn't show anything when I press ctrl+space but when I go Edit-> Content Assist -> Default(it says Ctrl+Space nearby it), it shows things needed to be shown/works as desired.
public class Dsada {
String sssss;
public Dsada(){
sss //pressing ctrl+space is not working,Edit->ContentAssist->Default works fine
}
}
The solution is not to tick/untick some stuff under Windows->Preferences->...->Content Assist-> Advanced. I checked if "ctrl+space" is hijacked by some other thing which is not and checked keyboard language which is English(Those are suggested in mkyong).
I read something about a bug but I couldn't understand. I tried to delete eclipse and re-install again but I guess some settings just stayed in the machine so that it didn't work.

This is recurring for me. I'm using Eclipse 2019-03 in Windows 10.
The steps below work for my case, and does not require a restart.
Window->Preferences->Java->Editor->Content Assist->Advanced
The following options are de-selected, and when I set them the autocomplete worked as before. No restart needed.
1. Java Non-Type Proposals
2. Java Proposals
3. Java Type Proposals
4. Java Proposals (Task-focused)
I don't know what's triggering this but it only happens after I've created a new project. Usually doesn't. It simply doesn't happen often enough for me to notice a pattern to follow up on more.
Clearly this problem occurs with a variety of causes, so review the other answers to see if they match your case.

The hot key combination ctrl+space might be conflict with other settings in system if you are using windows.
Try modify this combination like alt+/, i always use this one since the first time i knew eclipse. It works well.
Hope it works for you.

Window->Preferences->Java->Editor->Content Assist->Advanced
The following options have to be selected, then the autocomplete worked . No restart is required.
Java Proposals (must be selected, not sure the follows)
Java Non-Type Proposals
Java Type Proposals
Java Proposals (Task-focused)

I was facing the same issue. If you use OS X Eclipse Ctrl+Space shortcut can be interfering with OS X system's "Selecting previous input source" using Ctrl+Space shortcut as default.
It is necessary to
edit System Preferencies/Keyboard/Shortcuts/Input Source and uncheck the "Selecting previous input source" or change the shortcut on something else. Eclipse should work after that even without restart.

I faced hot key problem with use Ctrl+Space. I tried to fix the issue first by Windows->Preferences->...->Content Assist-> Advanced and selected
Select the proposal kinds contained in the 'default' content assist list:
Other Java Proposals,
List item
SWT Template Proposals
Template Proposals
Type Proposals
but didn't help.
Therefore, I tried another solution. There would be multiple languages on your computer which could be eating up your Ctrl command. To solve this Go to Control Panel -> Region and Language -> Keyboards and Languages (tab) and then Change Keyboards.
You’ll see a list of languages installed – remove any that you don’t want (click the language and then click the Remove button) until you only have the ones you want left. That fixed it for me, but you can also check the Advanced Key Settings tab to make sure that none of the keyboard short-cuts that are set include Ctrl-Space.
Once you’ve done that, Ctrl-Space should work nicely!!!!

I had the same Problem on Ubuntu 14.04. The problem for me was that ibus used Ctrl+Space as a shortcut. I solved it by starting the program ibus-setup and chaning the shortcut to something else than Ctrl+Space.

Go to Windows >> Preferences » Java » Editor » Content Assist. Then Check the Auto activation triggers for java, Add this in the text box .abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ

Recently, I also faced this issue. When I install neon version eclipse.
By (1) deleting respective class, (2) restoring defaults appearance and (3) restarting eclipse, solved the problem for me.
Hope it will help someone.

Go to Preferences » Java » Editor » Content Assist » Advanced. Make sure Other Java Proposals is ticked/checked.
I checked windows has no conflict of ctrl+space (of eclipse autosuggestion) with windows.
This is mere configuration issue of eclipse. reinstallation would fix it.
Thanks.

I select all the parameters in Preferences -> Java -> Editor -> Content Assist -> Advanced.
It help me and resolve the my problem.
Cltr+space work using this step.

Saving my work and restarting Eclipse solved this for me. I hadn't shut down Eclipse in a while, maybe weeks.

I had the same problem (MacOS Monterey, Eclipse 06-2022). Turned out it works with pressed fn button.

For Mac user, you can try : Preferences -> Java > Editor > Content Assist and then :
tick the field "Enable auto activation"
in the field Auto activation trigger for Java, you can input the text alphabet ".abcdefghijklmnopqrstuvwxyz"

IntelliJs code-completion doesn't show parameters names

I recently made a switch from Netbeans 7 to IntelliJ 13 and so far I'm very happy. However in Netbeans I found the code-completion to be a bit better, despite reading nothing but praise for IntelliJs code-completion.
My code-completion in IntelliJ just shows parameter types, not names. I have attached picture to show you.
As you can see, Netbeans show the entire function declaration, which is useful if you don't know every method by heart or just forgot if "is name or address first?".
Is there a way to make IntelliJ behave the same way?
//EDIT: I use Windows 7, my IntelliJ is community version 13.0, build #IC-133.193

Configure the SDK properly.
Ctrl+alt+shift+s -> SDKs -> Click the + and find your SDK

Why does Eclipse 3.5.1 narrow to the declaration when I go to the declaration of a field?

I just installed 64-bit Eclipse 3.5.1 on SnowLeopard. I am experiencing a rather strange problem, and I'm posting a question here to see if anyone can explain or confirm it before I go get tangled up with the Eclipse bugzilla.
I open up a Java class with some errors in it. I double-click on a reference to a field. I click right and select 'open declaration'.
The windows then shows me ONLY the declaration. I smell a feature here, but I can't figure out how to get Eclipse to go back to displaying the entire class except by closing and reopening the class.

Go into the Eclipse Preferences and under Java > Editor you will see a checkbox for "Only show the selected Java element"... what you describe sounds like the behavior when that is checked. Try unchecking it.
Good luck.

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