NoClassDefFoundError after upgrade to FC3
Cyrus Adkisson
cadkisson at rooseveltmedia.com
Mon Nov 15 21:17:20 UTC 2004
Well, there are about 200 jar files in the jdev installation directory,
so the shotgun approach isn't very appealing. I don't see any kind of
log files anywhere, either... I was able to do one thing, which was
print out the actual java command (which is HUGE) with an echo in the
jdev launch script. Cutting and pasting it, I was able to get more
descriptive NoClassDefFoundError output:
Exception in thread "main" java.lang.NoClassDefFoundError:
oracle/jdeveloper/JDeveloper
I'm probably an idiot for not knowing right away what the problem is
now. I know that java can't find the correct jar file containing the
JDeveloper class, but how do I know where that is?
jdevinstalldir/jdev/lib/jdev.jar has already been inserted into the
classpath... what now?
Cyrus
Cortezzo, Jason wrote:
>Usually, a NoClassDefFoundError will have a message, which specifies the
>missing class, before the stack trace like...
>
>Exception in thread "main" java.lang.NoClassDefFoundError:
>com/somepackage/SomeClass
>
>Without it, it's a lot harder to figure out what is missing. Does Jdev
>have a log file that you could look at to try to find out which class is
>missing? Otherwise, you can try a shotgun approach. Locate all your jar
>files in your Jdev installation (find /jdevinstalldir -name *.jar) and make
>sure that they are all in your classpath.
>
>Check the script that starts the IDE and see if it is setting a classpath.
>Sometimes the CP is set using a command line option of the java command
>(i.e. something like: java -cp {classpath} com.oracle.IDEStartup). Make
>sure all the jar files that the script expects to find actually exist.
>
>The Eclipse error message is a little more descriptive. It's looking for a
>native library (as opposed to a Java class file) and it's telling you
>exactly which one it is looking for
>"/usr/local/eclipse/plugins/org.eclipse.swt.gtk64_3.0.1/os/linux/amd64/libsw
>t-pi-gtk-3063.so"
>
>-Jason
>
>-----Original Message-----
>From: fedora-list-bounces at redhat.com [mailto:fedora-list-bounces at redhat.com]
>On Behalf Of Cyrus Adkisson
>Sent: Monday, November 15, 2004 1:22 PM
>To: For users of Fedora Core releases
>Subject: Re: NoClassDefFoundError after upgrade to FC3
>
>Thanks for the reply. That's the whole error as far as jdev is concerned.
>When I try to run eclipse I get the following error, which may or may not be
>related:
>
>java.lang.UnsatisfiedLinkError:
>/usr/local/eclipse/plugins/org.eclipse.swt.gtk64_3.0.1/os/linux/amd64/libswt
>-pi-gtk-3063.so:
>/usr/local/eclipse/plugins/org.eclipse.swt.gtk64_3.0.1/os/linux/amd64/libswt
>-pi-gtk-3063.so:
>cannot open shared object file: No such file or directory
> at java.lang.ClassLoader$NativeLibrary.load(Native Method)
> at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1586)
> at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1495)
> at java.lang.Runtime.loadLibrary0(Runtime.java:788)
> at java.lang.System.loadLibrary(System.java:834)
> at org.eclipse.swt.internal.Library.loadLibrary(Library.java:100)
> at org.eclipse.swt.internal.gtk.OS.<clinit>(OS.java:19)
> at org.eclipse.swt.internal.Converter.wcsToMbcs(Converter.java:63)
> at org.eclipse.swt.internal.Converter.wcsToMbcs(Converter.java:54)
> at org.eclipse.swt.widgets.Display.<clinit>(Display.java:118)
> at
>org.eclipse.ui.internal.Workbench.createDisplay(Workbench.java:268)
> at org.eclipse.ui.PlatformUI.createDisplay(PlatformUI.java:153)
> at
>org.eclipse.ui.internal.ide.IDEApplication.createDisplay(IDEApplication.java
>:122)
> at
>org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:72)
> at
>org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.
>java:335)
> at
>org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:273)
> at
>org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:129)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
>sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39
>)
> at
>sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
>.java:25)
> at java.lang.reflect.Method.invoke(Method.java:324)
> at org.eclipse.core.launcher.Main.basicRun(Main.java:185)
> at org.eclipse.core.launcher.Main.run(Main.java:704)
> at org.eclipse.core.launcher.Main.main(Main.java:688)
>
>Also, I just upgraded my java rpm (and set JAVA_HOME to the new location),
>so I know all the files are there. It must be a jar file that isn't in the
>classpath. What jar files would normally be in the CLASSPATH?
>
>Cyrus
>
>
>Cortezzo, Jason wrote:
>
>
>
>>Are you giving us the entire exception message? It should tell you
>>which class it is looking for. I think it usually prints right before
>>the stack trace.
>>
>>A NoClassDefFoundError means either a .jar file is missing or your
>>CLASSPATH enviornment no longer contains the necessary file.
>>
>>-Jason
>>
>>-----Original Message-----
>>From: fedora-list-bounces at redhat.com
>>[mailto:fedora-list-bounces at redhat.com]
>>On Behalf Of Cyrus Adkisson
>>Sent: Monday, November 15, 2004 1:10 PM
>>To: For users of Fedora Core releases
>>Subject: Re: NoClassDefFoundError after upgrade to FC3
>>
>>Well, I uncovered one big clue. Whenever you upgrade to FC3, the system
>>attempts to install gcc-java (and does) which can screw up the workings
>>of your Sun java considerably. Among other things, FC3 installs a
>>/usr/bin/java script that points to the gcc-java code so when you type
>>java -version it gives you a bunch of gcc output. If you disable the
>>/usr/bin/java script, then it will revert back to the Sun java.
>>
>>However, doing that did not fix my problem. Jdeveloper still gives the
>>same error I posted previously, as if it's searching for something in
>>the classpath. Eclipse does something similar. Can anyone help me
>>understand what I might need in the classpath for this to work again?
>>
>>Cyrus
>>
>>Cyrus Adkisson wrote:
>>
>>
>>
>>
>>
>>>Hi everybody. I use jDeveloper from Oracle to program, create GUIs and
>>>manage my various projects. It's not open-source, but it's a very good
>>>program. I have been using it without errors for at least a year.
>>>Then, when I upgraded to Fedora Core 3, it was the only thing on my
>>>computer that stopped working. When I click on the icon on my desktop,
>>>nothing pops up, and top shows a massive load on the CPU for "jdev".
>>>When I run it in a terminal window, I get the following error:
>>>
>>>java.lang.NoClassDefFoundError
>>> at java.lang.Class.forName0(Native Method)
>>> at java.lang.Class.forName(Class.java:141)
>>> at oracle.ide.IdeCore.class$(IdeCore.java:89)
>>> at oracle.ide.IdeCore.startupImpl(IdeCore.java:775)
>>> at oracle.ide.Ide.startup(Ide.java:539)
>>> at oracle.jdeveloper.JDeveloper.launch(JDeveloper.java:58)
>>> at oracle.jdeveloper.JDeveloper.main(JDeveloper.java:37)
>>>
>>>I've got the same java SDK I had before, and the configuration files
>>>are pointing to it. Can anybody think of why an upgrade to Fedora Core
>>>3 would be causing this error?
>>>
>>>Thanks,
>>>Cyrus
>>>
>>>
>>>
>>>
>>>
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>>
>>
>>
>>
>
>
>--
>__________________
>Cyrus Adkisson
>RooseveltMedia.com
>1833 New Hampshire Avenue NW
>Washington, DC 20009
>(202)465-4359
>
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