I've downloaded, unzipped and setup Eclipse 3.4.2 with some plugins (noteable, EPIC, Clearcase, QuantumDB, MisterQ).
Now I find when I'm editing Java projects the code completion is not working. If I type String. and press ctrl+space a popup shows "No Default Proposals" and the status bar at the bottom shows "No completions available".
Any ideas?
Try restoring the default options in 'Windows > Preferences > Java > Editor > Content Assist > Advanced'
An example of the kind of data you see in this preference screen, however not necessarily what you currently have.
(From Vadim in this blog post " Content Assist Duplicates in Eclipse (Mylyn)":
if have duplicate Mylyn entries, uncheck the duplicate entries that do not contain "(Mylyn)" in their name)
The Eclipse help page defines the default list to restore:
Select the proposal kinds contained in the 'default' content assist list:
Other Java Proposals,
SWT Template Proposals,
Template Proposals,
Type Proposals
I'm adding an answer here in case someone else finds this on Google. Same symptoms; different problem. For me, the type caches had become corrupt.
From http://mschrag.blogspot.co.nz/2009/01/open-type-cant-find-your-class.html
Quit Eclipse
Go to workspace/.metadata/.plugins/org.eclipse.jdt.core
Remove *.index and savedIndexNames.txt
Restart Eclipse and search Ctrl+T for the offending type. The indexes will be rebuilt.
In case someone comes here and want to activate the autocomplete function, go to
Preferences -> Java -> Editor -> Content Assist.
Then in the Auto Activation section fill in Auto activation triggers for Java:
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ._
For those running Xfce + having IBus plugin activated, there might be keyboard shortcut conflict.
See more info on my blog: http://peter-butkovic.blogspot.de/2013/05/keyboard-shortcut-ctrlspace-caught-in.html
UPDATE:
as suggested by #nhahtdh's comment, adding the some more info to answer directly: IBus plugin in Xfce uses by default Ctrl+Space shortcut for keyboard layout switching. To change it, go to: Options and change it to whatever else you prefer.
Check the lib of your project. It may be that you have include two such jar files in which same class is available or say one class in code can be refrenced in two jar files. In such case also eclipse stops assisting code as it is totally confused.
Better way to check this is go to the file where assist is not working and comment all imports there, than add imports one by one and check at each import if code-assist is working or not.You can easily find the class with duplicate refrences.
Another solution which worked for me is to go to Java--> Appearence --> Type Filters and do disable all
None of these worked for me.
I was experiencing this issue in only once particular class. What finally worked for me was to delete the offending class and recreate it. Problem solved... mystery not so much!
If you have installed Google Toolbar for IE, may be you can face the same problem. Because, the toolbar capture the shortcut ctrl+Space.
I had this problem and like #Marc, only on a particular class. I discovered that I needed to designate Open With = Java Editor. As a Eclipse newbie I hadn't even realized that I was just using a plain text editor.
In the package explorer, right-click the file and chose "Open With".
I faced this problem, and spent hours trying to figure out the issue. tried to follow the steps mentioned in the different answers above, the solution I found is on the same lines as Mona suggested, but slightly different. Tried to add as a comment to Mona's answer but no option was available.
Issue with my eclipse was, classpath somehow got corrupted and all the jars and dependent projects were missing. after taking the latest .classpath from repository it worked fine.
Check that you did not filter out many options inside the Window > Preferences > Java > Appearance > Type Filters
Items in this list will not be appear in quick fix, be autocompleted, or appear in other various places like the Open Type dialog.
I also face this issue but it is resolved in different way.
Steps that I follow may be helpful for others.
Right click on project (the one you are working on)
Go to Properties > Java Build Path > JRE System Library
Click Edit... on the right
Choose the JRE 7
Once you have you configuration checked and completion is still not working:
make sure you have the right directory structure.
Do you see the right icon beside the file?:
It will tell you how the file will be treated by Eclipse:
I am posting this answer as I had that story with with Maven webapp artifact. By default Maven-WebApp does not create folder for sources and I put my Java into resources, wondering for 5 minutes what was going on... :)
Running STS on Java Spring Boot projects, here's what works for me :
Maybe this helps other people who come across the same issue.
My setup: old Gradle project (version Gradle 2.12) made by someone else, imported using the Gradle Import Wizard into STS (Eclipse Oxygen.2 (4.7.2)).
Code completion did not work either (and I still have hollow Js at the Java files), but at least I got the code completion to work by doing:
right click on the project folder > Properties > Gradle > Configure Workspace Settings > Java > Editor > Content Assist > Advanced
check "Java Proposals in upper window.
2x Apply & Close
I have run into this problem since upgrading to Eclipse 2019-09. Based on some of the suggestions above, this is what worked for me.
I had to go to Eclipse -> Preferences -> Java -> Editor -> Content Assist -> Advanced.
I found out that if I turn on any of the key binding proposals, Java Non-Type, Java, Java (Task-Focused) or Java Type proposal, then I was able to use auto complete. If I turned them all on, then not only did auto complete work, but I got duplicate methods listed. I am guessing, but I will probably used Java Type Proposals. Any clarification of what differs for these four types would be appreciated.
In my case, Intellisense had only disappeared in a few classes in one project. It turned out this was because of a missing library on the build path (although it worked previously).
So definitely check all the errors or problems in Eclipse and try to find if a library may be missing
For those who use the latest 3-19 eclipse build:
It just happened to me when upgrading from Oxygen to 3-19 eclipse version, so I assume the auto-complete feature does not migrated correctly during the upgrade process.
The only solution that worked for me was to create a new eclipse workspace, and import the project/s to it. It might take a few minutes, but it worth it - comparing to the time spent on other solutions...
I ran into this and it ended up being I was opening the file with the text editor and not the java editor.
For me the issue was a conflict between several versions of the same library. The Eclipse assist was using an older version than maven.
I had to go to the .m2 directory and delete the unwanted lib version + restart eclipse.
I experience problems on Eclipse Neon when editing a file which does not belong to the project directory. When I copy the same file to the project root directory, not even to the src directory, the completion starts working.
When the file is opened from a different directory, only completion for JRE works. That is for example: java. completes, but junit. does not.
Just in case anyone got to a desperate point where nothing works... It happened to us that the content assist somehow shrunk so no suggestion was shown, just the "Press Ctrl+Space for non-Java..." could be seen.
So, it was just a matter of dragging the corner of the content assist to enlarge the pop-up.
I know, embarrassing. Hope it helps.
Note: this was an Ubuntu server with Xfce4 using Eclipse Oxygen.
If you're experiencing this in an enum, or when initializing an array with anonymous classes, it's a known bug in Eclipse. See Eclipse content assist not working in enum constant parameter list.
We can change the settings as per our requirement.
Suppose we want to make java proposal as highest priority we need to do changes as shown below.
Windows > Preferences > Java > Editor > Content Assist > Advanced
Choose Java proposal and click on up button
For me in Sep 2021 it was an odd Eclipse bug. I had a multi-line string inside an annotation in my Class. This caused just that particular class to fail when trying to code complete (even though the class compiled just fine).
Related
I've recently migrated to IntelliJ and need to solve a particular problem: I have a project that has numerous modules; one of these modules is purely for testing and contains a number of errors:
.
I'd like to suppress all warnings/errors/inspections on NNGINETest in this screenshot. Is there a way to configure the project to do that? I found this answer: How do I disable some inspections for modules in IntelliJ IDEA? but I'm not quite sure it's for the same thing. On top of that, the answer was a bit unclear to me and I wasn't able to understand all of the steps because of how new and unfamiliar with IntelliJ that I am.
If someone could please thoroughly explain to me how to solve this problem, I would be grateful.
Since you have errors in NNGINETest, I suppose you don't need to run it. So I would suggest marking the src folder under NNGINETest as excluded. like:
I tried to expand Eric's answer but it was rejected for arbitrary reasons, so I'm writing my own to try and clarify some more for anyone else that runs into this problem since I hate bureaucracy. Adding it as an answer will allow me to provide some visual aids:
NNGINETest has errors that are reported in building. Eric's answer is correct in that we can exclude it, but the problem is that the console is still spammed with error reports upon building when I right clicked the project and marked it for exluding that way. I fixed it by excluding it via the menu in File -> Settings -> Build, Execution, Deployment -> Compiler -> Excludes
You'll want to probably also make sure that the "Recusively" checkboxes are checked for modules you want to exclude.
I don't really know what the difference is here between this and using the right click menu option (I couldn't find anything in the IntelliJ manual about it either but maybe someone can provide a link in the comments), but this successfully prevented NNGINETest from littering the console during building:
Additionally, using the Excludes menu rather than the directory marking for the module allows it to still appear in the Project module list rather than disappearing. An "x" will appear by excluded folders. This is pretty useful in my opinion:
Hope this helps!
I'm using Eclipse Eclipse IDE for Java Developers [Version: 2018-12 (4.10.0)
Build id: 20181214-0600] to develop a JavaFX project but I got some problems.
After a Java update, I've found several errors in my CSS files. Eclipse seems to think the CSS files are Java source code, as figured in the image below.
When I drag the mouse on a error, the description is "Syntax error on token 'Invalid character', interface expected" (because of # symbol)
I'm sure the code is correct because there are no errors before the latest java update to version 1.8.2.
Anyone can help me?
Most likely what happened here is what #Gianpio Benincasa said: You've created a new class, then in the file explorer you renamed it.
However, it's worth checking this one: Go to window/preferences, type 'associations' in the filter box to quickly nav to setting General>Editors>File Associations, and scroll through the file types list for *.css. Click on it, and check which editors are associated with it.
An eclipse with no particularly relevant plugins should only list 'Text Editor', and it should be marked as default. If you added plugins specifically for editing CSS, those will also be listed (and one of those is now probably default instead). Perhaps you or someone else went out of their way to add the java editor to this list somehow. If that is the case, simply make 'text editor' the default again (click it, click 'default'), then click on the java editor, and click 'remove'.
for eclipse that is a java class, in fact the icon has the "J". Probably when you created it you have created a new class and then have renamed it.
Create a new generic file instead a java class and copy the contents to the new file.
For create a generic file, rightclick and follow new-> other-> General-> files
Have a nice day
I have a project in Accurev for which I created a workspace. I did File > Import > Existing Projects into Workspace. After the import, the first thing that I have done is Configure Build path (Project>properties>Java Build Path). Still, I can find a lot of errors. I'm new to Java and I'm searching the Java errors in google and fixing them. Please suggest, How can I solve the similar errors for multiple files.
For Example,
The Empty block should be documented (I have it in 3 files)
The parameter customerExpression should not be assigned ( Multiple files )
The import java.util.List is never used ( Multiple files ). There are some other imports which were used inside the company are never used.
Apart from Java Problems, I do have
Classpath Dependency Validator Message
EJB Validator Message
HTML, JSP Problems etc which I feel can be solved once I solve Java Problems. I was told that Java problems are important. COrrect me if I'm wrong.
Please suggest.
Thanks
Like #Carlos Heuberger said these are seems like warnings not errors they won't cause any problem for your project to run. People usually don't care that much of warnings.
If you want to get rid of those warnings eclipse have quick fix actions for some of them. To do that head one of the warnings and right click then select quick fix. This should pop out a screen which summarize the action that eclipse will take.
Or you can simply hide them.
If you want to hide all the validation warnings go Window>Preferences>Validation then click Disable All button. This will disable all validation messages in your workspace.
For java warnings go through Windows>Preferences>Java>Compiler>Errors/Warnings and change the warning options according to your preferences. In my workspace under the Code Style section Undocumented empty block is setted to ignore so i don't get that warning in my workspace unlike yours.
Hope that helps.
I just installed the new eclipse kepler (eclipse 4.3). It shows me hundreds of errors and warnings from third party javascript libraries.
I tried to disable the javasscript validation completely by unchecking "Enable JavaScript semantic validation" in "Preferences/JavaScript/Validator", but with no effect - Errors and warnings are still shown.
Is there another option to disable them or is this just a bug?
Can other people confirm this issue or is it just me? :)
Edit 1: Lavie Tobey pointed out, i should set all validations to "ignore" -> did not help
Edit 2:
Jim Garrison pointed out, i should disable the builder for the projects -> Actually I don't have a javascript builder in there. Disabled for testing purposes all of them, but did not help:
You can go Project properties/Javascript/Include Path/source and exclude the third party components.
There are two places you have to look. You have found the first. The second is in each project's Properties dialog, accessed by right-clicking on the project in Package Explorer and selecting "Properties". There, under Builders you may find a "Javascript Validation" entry, which you must disable.
You have to do this for every project that contains a Javascript Validation builder.
Try this: Open the .project in notepad and remove the javascript validator
I've found that in previous versions of Eclipse, the only way to really get these to go away is to enable it and change every case to "Ignore".
You can switch off (and configure) validation in Preferences/Validation or (for each project) Properties/Validation. However, this doesn't seem to force a cleanup of the messages.
Like it was said : be sure to go to PROJECT properties (right click on project, properties), and not Workspace (Eclipse/preference).
I searched like 20 min before hitting myself ;)
I solved this by choosing a PHP profile for my javascript instead.
Maybe you don't get the same functionality but for me this profile is just fine. Crashes, hangings & frustration went away.
I had the same issue for XML Validation. I deactivated the validators globally and in the projects itself, nothing worked for me. There wasn't even the slightest hint that anything changed. I even uninstalled XML Editor and Validation Plugins without any effect.
In the end the problem was solved in copy-pasting the XML files with a validation error, deleting the old files and renaming the copies files to the original ones. Somehow Eclipse did not re-validate the old files, but the new ones were okay.
Using Eclipse I comment out errors as temporary solution.
Every once and a while these errors remain sticky (no way to get the errors away even when code is removed by commenting (comment color confirms the comment)
Save/clean/rebuild/restart of eclipse ... nothing helps any more but a painstaking recreation of the project file by file .... can anyone give me a tip ?
The error text is often removed module can not be resolved, variable can not be resolved
this as only error where the use of the variable is completely removed!
I've the most recent eclipse version but had it with previous versions as well
Thanks in advance, This can save me day's of useless work.
Please try this:
What I usually do is I cut the entire document/file and paste it.
I am using Helios Service Release 1
Ctrl+A, Ctrl+C and then Ctrl+V.
It fixes the problem for me. I hope it does the same for you.
Cheers.
Just go to the problems list where the error/problem is listed and delete the entry, then it should also disappear from the editor.
- Go to the Problems Tab at the bottom of the IDE.
- Remove all the Error and Warning Entries.
- At last Clean the Project.
Try clicking right mouse button and select the option "spelling check". I´ve realised I have this errors when I write comments in my native lenguage, not in english.
I had similar error. The problem in my case was disabled autobuild in Eclipse. (Project > Build Automatically)
click on the comment being where error is shown. Click on "Disable spell check"