I am using Eclipse to program in Java. I tried installing from this site though Eclipse's Updater but although it didn't fire any error, I don't see the menus they say I should.
Maybe I have to install something first? Maybe there other simpler JML options? What you guys use?
The problem was that I didn't have JDK installed (just Eclipse's stand-alone package). Installing the JDK and reinstalling JML in Eclipse did the trick.
You should open the Error Log view and see if it contains any relevant errors.
Related
I was using eclipse IDE for java Developers, then a notification for update comes through, I've accepted it, everything is ok, restart needed, ok.
after opening, I've shocked that it became IDE for Web Developers, and all my projects became full of errors, and can't make a new java project.
I can't just download another version of eclipse for java ee, because I have a lot of plugins installed, and many configurations made.
How I can return back to the previous version?
Any suggestions please
You should be able to download and install the older version of Eclipse again:
Don't try to reinstall on top of your existing installation. Move or copy the existing Eclipse installation directory somewhere else before you start.
I would also advise making a backup of your workspaces before you do anything else. It is unlikely that the upgrade / downgrade will do any damage, but you can't be too cautious.
The errors that you are seeing are likely to be due to a simple Eclipse configuration problem, or maybe a problem with versions of third-party plugins. If you told us what the errors were, someone would be able to tell you how to fix them. Then you can use the newer version of Eclipse.
I can't just download another version of eclipse for java ee, because I have a lot of plugins installed, and many configurations made.
Actually, neither of those things prevent you from doing that. Downloading and reinstalling will be inconvenient ... but it is probably your best option.
Note that you could either download and install the new version of Eclipse, or you could download and install the version you were using previously.
I think it's no matter. I suggest to you use Spring Tool Suite based on Eclipse 3.**; You don't have to deal.
Today I turn on my laptop and STS shows me this error, and I dont have any idea, Why STS is raising this.
My java home is :
and my gradle project is using java 1.7.
Maybe you can help me to solve this problem.
Thank you.
This can be related to having multiple jdk installs and can be fixed by renaming the other jdk folders, however the true problem here may be caused by a symlink in /jdk1.8.0_71/jre/lib/tools.jar pointing to jdk/1.8.0_71/lib/tools.jar. Remove the symlink and see if Gradle works.
So I was working on eclipse when I received this issue
The 'API Tools Javadoc Proposals' proposal computer from the
'org.eclipse.pde.api.tools.ui' plug-in did not complete normally.
The extension has thrown a runtime exception.
This happened directly after I installed Java-8 into eclipse.
Now my understanding that this is a comparability issue so I tried multiple things as shown below, however I still face the same issue
1- I have tried help->Check for Updates
So it performed some updates normally but the same issue remained as it is
2- I have tried help->Install new Software to install JAutodoc
So I got the link for their website and installed the latest update I believe, however the same issue remained.
Website: http://jautodoc.sourceforge.net/
Update link: http://jautodoc.sourceforge.net/update/
As for someone not familiar with this tool, I believe that I might have forgot something. However searching through the internet did not help me.
Any suggestions ?
See this bug report: https://bugs.eclipse.org/bugs/show_bug.cgi?id=433918
Like the poster in the bug report, I was able to fix this (in Kepler) by uninstalling everything to do with the Groovy plugin. After uninstalling the groovy pieces I had to reinstall java 8 support from this Kepler-specific link, and then I was able to reinstall the Groovy plugin using the J8-specific groovy eclipse link in the bug report: http://dist.springsource.org/snapshot/GRECLIPSE/e4.3-j8
Then once I fixed the compiler compliance level in my project to 1.8, things were working again.
(Took me a while to find how to uninstall things: Help -> Install new software, and then click the little "already installed" link at the bottom.)
From the bug report, it sounds like this bug wouldn't happen in a newer Eclipse (Luna or Mars.)
I just ran into the same problem today.
I solved it as follow (I have a mac, instructions for other operating systems might differ)
Open Eclipse
About Eclipse
Installation Details
*Find org.eclipse.pde.api.tool.ui
*click update.
Updating the plugin solved my issues. I am not sure if this solution works for everyone but it works for me.
You are not running your eclipse instance with Java8. The JavaFX tooling is disabled because of this.Make Java8 the default system java or adjust your eclipse.ini to pass -vm pointing to your Java8 install.
I have the latest JDK with Java 8 installed and it works perfectly for any other method or program in my application. However, when I try to install this plugin, I get the previous error.
I am running Mac OSX Yosemite with Eclipse Luna.
Any suggestions?
Thank you!
I decided to simply download the Eclipse that is bundled with this plugin from:
http://efxclipse.bestsolution.at/install.html#all-in-one
It works fine and recognizes my Java 8.
I use JavaFX on Luna without any Plugin... is that plugin supposed to help you with the GUI Design? if your answer is yes, you better use SceneBuilder and forget about any other plugin/software.
Also... that happens when you try to run a JavaFX program? or when you open Eclipse?
Make sure that you have the jfxrt.jar in your Java dir... if it is, import it to your current project... i know there's something else you can check but i cant remember it rigth now. I'll write it here later.
Anyway, let me know if the previous text helped you
I'm trying to get started with Eclipse/Java/Scala on a MacBook. The installed JDK was 1.5. The SDT plugin for Scala requires 1.6 which was included in an OS update, but I also manually installed a package from Apple to update 1.6.
The problem is that I cannot run anything from Eclipse. I always get the following error:
An internal error occurred during: "Launching TestFooBasicTest".
Could not initialize class com.ibm.icu.impl.JavaTimeZone
I also tried to use the old 1.5 version, but to no avail.
What is going wrong here?
I had the same problem trying to run a scala program with Ubuntu 10.4 and stock eclipse (Galileo 3.5.2) and java (java-6-openJdk ) - and the scala pluging downloaded from scala site, of course. I fixed it by manually changing /usr/lib/eclipse/plugins/com.ibm.icu_4.0.1.v20100125.jar as suggested in this thread (btw I discovered that Emacs can change a jar file in place: nice):
http://www.eclipse.org/forums/index.php?t=msg&goto=488654
It's caused by ubuntu openjdk package with broken symbol links for TimeZone configuration. The best solution from forum thread is,
Reinstalling tzdata-java was the fix for me:
sudo apt-get --reinstall install tzdata-java
The problem is:
An internal error occurred during: "Launching TestFooBasicTest". Could not initialize class com.ibm.icu.impl.JavaTimeZone
A quick google search reveals that this class belongs to the IBM Globalization package ICU. http://www-01.ibm.com/software/globalization/icu/index.jsp
A guess would be that this is a package used internally by Scala that you have not installed properly, causing Scala startup to fail.
Make sure that you set java 1.6 in the run configuration (Run/Run configurations).
Did you upgrade to Snow Leopard? Are you using the Eclipse SWT/Carbon or the Eclipse SWT/Cocoa? I was seeing some strangeness with Eclipse after I upgraded to SL. Switching to the Eclipse SWT/Cocoa from Eclipse SWT/Carbon helped. Also restoring my 1.5 VM, which the SL install removes in a sneaky way(by deleting and leaving the symbolic link pointing to 1.6), helped me fix several issues with Java code that had natives(i.e. usb-serial port code).
Check what are the JVMs that Eclipse is aware of and where they are located (Preferences -> Java -> Installed JRE), and also check the run/debug configuration of your programs. By default, Eclipse knows about the JRE that was used to launch itself, and other JREs that you add manually. However, if you upgrade some components and the JREs changed, Eclipse can get "confused" about them.
I had this same issue with Eclipse on Windows. I tried a number of different things including a new hello world program in a new workspace. I finally got this to work by pointing Eclipse to a different JRE to execute with. I know that Apple provides the JRE for Mac, but it does seem like this issue is related to Eclipse having trouble with the JRE used to run Eclipse itself. See here for configuring which VM Eclipse executes with.