As the title says, IntelliJ keep asking to set the Scala SDK of my sbt projects (they are inside a multi-project) at every merge with the repository. It's like some settings file is being overwritten for a specific project but I can't seem to find what's the problem. Any insight on where to look?
If in the "Project Settings" (⌘-;) you have the scala-jdk set in the "Global Libraries":
and the problem persists, then I would suggest to try to:
close the project and exit IntelliJ
delete the .idea folder and
create a new IntelliJ project importing the directory with the sbt-multiproject folders
I'm trying to open my Maven project with Eclipse Juno, but I'm getting this error:
An internal error occurred during: "Updating Maven Project".
Preference node "org.eclipse.wst.validation" has been removed.
How is this caused and how can I solve it?
Same probleme here, there the solution I fix it
Open the .project file with your prefered text editor.
delete the node that is about "org.eclipse.wst.validation"
Close your project
Open your project
Launch Maven Update...
Should be good.
Another way to fix it, if you don't want to change your .project config
(or if you had several projects that must be fixed)
Close your workspace (or eclipse)
-move out <WorkspaceDir>\.metadata\.plugins\org.eclipse.core.resources\.projects from the workspace directory
-reopen you workspace
close it again
-move back the .projects dir (say yes to replace questions ? )
open you workspace
Launch Maven Update
Should be good
Simpler fix:
Close Project
Open Project
Project > Clean
Run Maven Update
I was using Eclipse Mars and in my case, just close and reopen my IDE did the work.
Dont know, if you still have this problem, but here is the solution worked for me:
It appears that deleting the file org.eclipse.wst.validation.prefs in
the directory .metadata/.plugins/org.eclipse.core.runtime/.settings
(default settings for workspace) or .settings in each individual
project will cause the settings for validation to be reset to their
original settings. You can then use validation without getting error
messages and try resetting the options from there. However, I'm not
sure what combination of settings would cause the problem to reappear.
However, if it does, you can repeat the process.
got this from here: https://bugs.eclipse.org/bugs/show_bug.cgi?id=355012
in my case i didnt have the mentioned file in this folder, but i had a bunch of other org.eclipse.wst.* files. deleting them all did the trick for me.
The problem is not related to the .projects folder as mentioned in another answer.
The solution is to add a file called org.eclipse.wst.validation.prefs in the .settings folder. This will restore the eclipse validation node.
The content of the file, depending on your eclipse version, might look like this:
disabled=06target
eclipse.preferences.version=1
Another Solution is too simple , deleting .project file then clean the project and maven update will success surely
I think this is one error that could be caused by multiple different sources. I just had the same error however, and just figured out why. In my situation, I just tried to force update some code by deleting a few temporary files. Turned out I accidentally deleted that file as well. I thankfully had it under source control, so I pulled the file back and updated the project with Maven. I also made sure any other errors were fixed so that the project would clean / update successfully.
I'm not sure if this will solve your problem, but I hope it helps! Good luck!
If I do Project -> Clean and then Build, everything is fine, but if I try to run this Android-project, a dialog comes up: "Your project contains errors. Fix them before running application", and there's a red cross on the project name.
There's no cross on any item in the project tree, and nothing in Console view or LogCat view. So, where's the error?
The only difference for this project and an earlier working version was that I removed a link to an external .jar file, created folder "lib" and put the .jar in there, and added that .jar to the build path. The .jar is the exact same as the external referenced.
You may need to Refresh your project in order to see the errors. Also, bring up the Problems tab for more specific information (Window > Show View > Other > General > Problems).
Eclipse shows the Errors in the Problems View.
It's difficult to guess but I would check the build path (right click the project and see), if some entry is missing there then there can be this error sign. Another reason of this red error sign is, if this project includes some other java project in path which has any errors (compilation or build path), then it will also display errors.
I had this error when I deleted a library, but did not remove it from the build path. Go to Properties - Java Build Path - Libraries. And see if you see something like "can't find library" and remove it.
I am using eclipse HELIOS. I am getting the following error message whenever I build my project.
Has anyone else experienced such error? Is it a problem of eclipse or the project? It never occured to me before but for this project its happening. It says NullPointerException but that should not pop up such message.
Please help, its driving me nuts. I need to check in my codes but I cant test them due to this building error.
Let me know if more details is reqd.
I found the solution. It was a maven plugin issue. Cleaning up the repository solved it.
First try;
Clean your all project from under project menu and eclipse tries rebuild.
Second try;
Remove your project from eclipse
Delete all files(eclipse project
files like .project) except .java
files and other necessary code files
like .xml
And create a new project from
existing these source codes.
Otherwise you can check your java compiler or eclipse builder path or builder version.
While compiling an android project in eclipse 3.4.2, I am getting The project cannot be built until the build path errors are resolved.
I got a temporary solution from the blog http://www.scottdstrader.com/blog/ether_archives/000921.html
The resolution was to force a resave of the selected projects (and their .classpath files):
Open the project properties
Select Java Build Path > Libraries
Add a new, arbitrary library (to be deleted later) > OK
Wait for the workspace to refresh (or force a refresh of the project)
The error(s) will go away
Remove the dummy library
The only other references I could find were to make minor alterations of contents of the .classpath file.
Is there any permanent fix for this issue?
Have you tried using Project > Clean... from the menu? This will force a new build on the selected projects in Eclipse.
1-Right CLick on your project folder, Choose Build Path > Configure Build Path
2-Select Libraries Tab and delete any arbitrary library present there.
3-Click on Add Library option, Select JRE System Library and click Next.
4-Choose last Radiobutton option Workspace default JRE and click Finish.
5-press f5 for refresh.
6-run ur program .
This what fixed it for me...
I was having an issue with my spring-core.jar.
I deleted the entire release directory located here. (I'm on win 10).
C:\Users********.m2\repository\org\springframework\spring-core\4.3.1.RELEASE
I right clicked on the project > Maven > Update project and my exclamation mark disappeared. No problems any more.
Here is the source where I found the information:
http://crunchify.com/cannot-be-read-or-is-not-a-valid-zip-file-how-to-fix-maven-build-path-error-with-corrupted-jar-file/
This happens when libraries added to the project doesn't have the correct path.
Right click on your project (from package explorer)
Got build path -> configure build path
Select the libraries tab
Fix the path error (give the correct path) by editing jars or classes at fault
This works for me: close the project then re-open it, this will force eclipse to reload a fresh project and detects the correct build path.
None of the other answers worked for me. Even after fixing my build path issues, doing a refresh, clean, rebuild, and restart (of both eclipse and the computer), I was still getting the little red exclamation point.
I fixed it by closing the project (right-click, close project) and reopening it (double-click the closed project), which seemed to force eclipse to "notice" that the build path problems had been corrected.
For my mac osx Eclipse, I followed following steps:
Right CLick on your project, Choose Build Path > Configure Build Path
Select Libraries Tab and delete any arbitrary library or anything else causing errors in Build Path.
Click on Add Library button, Select JRE System Library and click Next.
Choose last Radiobutton option Workspace default JRE and click Finish.
Clean and build your project.
get a cmd and run
mvn eclipse:eclipse
This is what worked for me:
Go to ~/.m2/repository and deleted everything there by running rm
-rf. Make sure everything is deleted.
Re-launch eclipse or STS
Right click on project -> Maven -> update project.
On my Mac this is what worked for me
Project > Clean (errors and warnings will remain or increase after this)
Close Eclipse
Reopen Eclipse (errors show momentarily and then disappear, warnings remain)
You are good to go and can now run your project
I've seen this problem a few times (got it again right now on my home computer with Eclipse 4.2).
Forcing a resave (by changing the classpath e.g. by adding a library, save, change-back) works temporarily. But the problem comes back when Eclipse is restarted :(
Nuking the Eclipse workspace from orbit will permanently fix it (until next time). But there must be a better way!
just check if any unnecessary Jars are added in your library or not. if yes, then simply remove that jars from your library and clean your project once. Its worked for me.
In Eclipse this worked for me: right click project. -> Properties -> Library Section; Add (any library at all) -> select library and click remove -> press okay.
I ran into this annoying issue with the Play framework. It would be nice if there was some way of knowing what build errors Eclipse is unhappy about, but it's not going to tell you. With one project, I was able to close the project, rebuild the Eclipse configuration with sbt eclipse, and reopen. With an almost identical project, that didn't work. But deleting the project, rebuilding the Eclipse configuration with sbt eclipse, and importing, did the trick.
If you think you've done everything correctly but Eclipse still complains about the jars, refresh the folder where the jars are and make sure eclipse knows they've been added to the project. Specifying the file path alone is (apparently) not enough
I've faced this issue a couple of times and following the below steps has resolved both the times.
1. Navigate to C:\Users\
2. locate the ".m2" folder and delete it.
Now navigate to the particular project in eclipse and Right-click on the project > Maven > Update Project
wait until the project is updated and in my case following the above steps resolved both the times.
I was getting an additional warning
The compiler compliance specified is 1.6 but a JRE 1.8 is used
Resolving this warning make the error also go away. The steps are as follows:
I right-clicked on it, then clicked on Quick Fix. From the dialog that opened I selected Open the Compiler Compliance property page, and clicked the Finish button.
(This is same as Java Compiler section.)
In this dialog I found the Compiler compliance level drop down and changed 1.6 to 1.8, and clicked on Apply and close.
I got a message box Compiler Settings Changed which asked if I wanted to Build the project now?. I clicked on Yes.
The build path error went away.
Go to > Right CLick on your project folder > Build Path > Configure Build Path > Libraries Tab > remove project and external dependencies > apply & close
Now, Gradle refresh your project.
Added below to pom.xml file and it worked eventually:
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>4.0.0</version>
<scope>provided</scope>
</dependency>
Goto to Project=>Build Automatically . Make sure it is ticked