Develop Reference

How to fix corrupted Eclipse Indigo JEE?

I installed following plugins in eclipse indigo in following order to start spring development
Spring Tools Suite
M2E (Maven)
after these two installations, it was giving error
jira connector not installed, so I installed the following plugin.
Atlassian Jira Connector
After installing Jira Connector, Eclipse Started showing the following error :
Uninstalled Jira Connector. Still Showing these Problems.
Any help would be appreciated.

Eclipse has major structural problems with uninstalls, which aren't really fixed even the latest luna. But don't worry, there are a lot of workarounds.
What you can do now and in similar situations:
1.
If you can even uninstall something, you won't get back its previous state before the install.
Because of it I use Eclipse normally with a trick: I store my main Eclipse install directory in a git repository, and so I can always switch back with a single command. But it is only a trick.
2.
There is a big chance, that only your workspace directory is damaged, and not your Eclipse. In this case you can solve this problem by reinitializing your workspace: make a backup, delete everything, recreate your workspace directory and finally import again your projects.
(For similar reasons it is also an useful trick to save your workspace metadata in a git repository as well.)
3.
In Eclipse, the menu items are created by modules. If an eclipse module is installed, it creates the changes in its internal configurations which create the menu items.
After a restart, Eclipse tries to restore your gui, and thus re-open its panels. But if a module uninstall is also happened, then its panels aren't restorable, resulting exactly your problem.
So, simply close the bad panels and try to reopen them. Sometimes it also works.
In short: recreate your workspace, it will probably help. And next time, use Eclipse with some good and frequent backup (I suggest git).

Conversion to Dalvik format failed with error 1 since facebook SDK

I'm getting really frustrated over this. Every imte i try to export my project I get the error: Conversion to Dalvik format failed with error 1
I tried a lot of things. I got the newest eclipse. Changed my proguard file.
This error only happened when I added the facebook 3.5.2 SDK to my project. We had in our library the same android-support-v4.jar. I deleted the one in my app and kept the one in the facebook SDK but I still het that error. Can anybody help me it's really frustrating ...
Thanks in advance..

We too faced this error and we found a smart solution for this,
Steps to resolve this error:
Uncheck the "Build Automatically" option in Project menu in eclipse.
Do project clean
And then, right click on the project name over
here you will find "Build Project" option
Click the "Build
Project" and now you can start export your project.
I hope it should work to you too.Please try and let me know...

For NewRelic users:
If you have integrated the newrelic jar in your app, this happens when the newrelic version is outOf date.
Solution:
Update the newrelic jar to the latest version. On eclipse, its just right click on the project and update newrelic. Or you can download the new version directly.
Thanks amalBit

I had the same error, and tried everything above but nothing helped me.
My projects are attached to GIT source control system, and I realized that there are some GIT related task while exporting to Andorid application. Then I commited all changes to the GIT repository and error dissapear.
So, if you are using GIT for source control and nothing above help you, try to commit all changes to the GIT repository (and eventually push to upstream) and try export again.

SVN my project not showing up

I was trying to use SVN today as i was doing all my changes in my webproject on the same folder/files, so wanted to try SVN for version control. However when i installed it and tried to create a repository named "project"...however my servlets/JS files/JSP files folder(package) is also named as Project...
Suddenly after i create the SVN repository i don't see all the work i did..all my .class file and everything else is wiped out. I went to Eclipse workspace i see nothing but .svn...Can someone please help me how to retrieve my work? It is many hours worth of work.
Thanks for your help!

First You can commit your projects by using tortoise svn after creating one repository in SVN.
Second you can checkout your project with eclipse.See this article to connect SVN with eclipse.

SVN error on eclipse with Delete operation (aparently)

I have an Android project on Eclipse (STS) and it is giving me this error last time I tried to compile:
The project was not built due to "SVN: '0x00000119: Delete' operation finished with error". Fix the problem, then try refreshing this project and building it since it may be inconsistent
Google was not very helpful.. Only 9 hits

I had the same problem, I disconnected and connected the project from the SVN.
In the project, right click, TEAM>Disconnect and the problem was solved

I would discard your current project and rebuild the project files again, importing the codebase :(
Update:
JohnEye recommends trying an svn cleanup first and this may solve your issue. If not, see above.

I may have just found the answer. It is surprisingly simple, assuming you are using linux, navigate to the project directory (cd ~/workspace/myProject) and run svn cleanup
Solved the problem for me.
Edit: Just happened to me again and my solution worked as expected, so it probably was not just a random fluke.

Had same issue. The work-around was to disconnect the project from SVN (Team->Disconnect) (note: please make sure you don't delete .svn) and refresh the project. Your are back on track, and you can reconnect to SVN once again.

Deleting the project and re-checking out has worked for a couple of hours, but then the problem returned (maybe I deleted stuff again or whatever). There's a bug track here: http://issues.tmatesoft.com/issue/SVNKIT-77

SVN is a wonderful tool, if used correctly. Unfortunately when we use SVN incorrect, we run into such crazy issues.
The best way to fix issues like this,
Checkout Project again
Use meld and copy "ONLY" files, NOT "directories" from workspace to checkout folder.
If you copy folders, you will also end up copying .svn hidden folders and you will be in the same mess again. So create the folders manually.
One more, DONT waste your time trying to find ways to fix your svn issues. Just use the 2 step process above.

I was encountering the same issue after importing the project from bitbucket repo. What worked for me was to disconnect the project and connect it again.
1. Team->disconnect.
2. Team->share project->Git->Use or create repository in parent folder->finish

Error with Restlet sample project

I downloaded the sample Restlet project and opened it in Eclipse. I instantly get this error:
Errors occurred during the build.
Errors running builder 'Google WebApp Project Validator' on project 'org.restlet.example.serialization.gae-gwt'.
java.lang.NullPointerException
What am I doing wrong?

I had this same error with my own project. In the Eclipse Project Explorer I right-clicked the project and chose Refresh. That cleared up the error for me.

This is a temporary, but repeatable solution someone on my team found...
Close project
Close Eclipse
Open Eclipse
Open project

I continually had this problem in combination with git. My git repository was in my eclipse workspace ( even though eclipse warns you not to do this ). Deleting the old repository, and creating a new git repository outside of the eclipse workspace, then cloning a fresh copy of my gwt project solved this problem for me. Hope this helps.

I'm also experiencing this error, but thanks to git comparing .classpath I noticed that I had removed a couple of variables from the "Configure Variables" list, but not from the Java Build Path. Once I removed it from the second list, the error was gone.

I got this error when I was using a workspace that was on an NFS and I had the same workspace open on two different vnc sessions. I closed out Eclipse on one vnc session and then restarted eclipse on the other. Then I went to the java build path and editted the gwt sdk and had it use the gwt sdk it was already pointed to and it stopped giving me that error. I didn't actually change the gwt sdk, just went through the motions of doing so. Hope this helps.

The problem was miss configuration of JRE, I just did the following:
Go to Build path configuration, select add Library, JRE System Library, select your JRE.
And there you go...

For me this error seemed to occur after a compile had failed due to lack of memory and eclipse had been restarted. However, after increasing memory (in the eclipse.ini) the problem still persisted. None of the above solutions worked for me.
The bizarre solution I found: our project here uses GWT 2.4, so I switched to 2.5 (which comes with the plugin - window>preferences>google>Web Tookit), re-compiled, switched back to 2.4 and, hey presto, it worked again!
(Another hour of my life I'll never get back!)