Problem with CLASSPATH

[Ismael Olea]

Hi:

First, I'm not a programer. I'm maintaining OmegaT and dependencies in
Fedora, all  java based.

Since first moment I'm experiencing problems with the CLASSPATH. When
removing it from the MANIFEST  I can't get the jvm to find the
dependencies, no matter I set them by the CLASSPATH variable or the -cp
option.

I'm supposing I'm doing (or not doing) something almost trivial. Anybody
have any idea of what I'm doing wrong? Any document to read?

Of course I've readed the Fedora Java package guidelines but doesn't
helped me.

Thanks in advance.

[Andrew Haley]

Ismael Olea wrote:
> First, I'm not a programer. I'm maintaining OmegaT and dependencies in
> Fedora, all  java based.
>
> Since first moment I'm experiencing problems with the CLASSPATH. When
> removing it from the MANIFEST  I can't get the jvm to find the
> dependencies, no matter I set them by the CLASSPATH variable or the -cp
> option.
>
> I'm supposing I'm doing (or not doing) something almost trivial. Anybody
> have any idea of what I'm doing wrong? Any document to read?
>
> Of course I've readed the Fedora Java package guidelines but doesn't
> helped me.

It's hard to say, because you haven't told us what you are doing,

Does OmegaT have a startup script?  If so, do something like this:

LOCALCLASSPATH="$(/usr/bin/build-classpath jaxp_parser_impl xml-commons-apis)"

java  -classpath "$LOCALCLASSPATH" ...

That's what the other Java startup scripts do.  There are plenty
of examples.

Andrew.

[Ismael Olea]

2008/11/26 Andrew Haley
> It's hard to say, because you haven't told us what you are doing,

I know, but I prefered not to flood you with not relevant details.
> Does OmegaT have a startup script?  If so, do something like this:

of course.
> LOCALCLASSPATH="$(/usr/bin/build-classpath jaxp_parser_impl
> xml-commons-apis)"
>
> java  -classpath "$LOCALCLASSPATH" ...

I tried several combinations like this. And the results are exactly the
same.

That's what the other Java startup scripts do.  There are plenty
> of examples.

I know, and I have been investigating a lot by my own. That's way I feel
puzzled. I tested with openjdk and sunjdk with same results too. It's a lot
weird.

The example:

[olea@lisergia ~]$ /usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0/jre/bin/java  -cp
/usr/share/java/vldocking-2.1.4.jar  -jar /usr/share/java/OmegaT.jar
53063: Info:
===================================================================
53063: Info: OmegaT - 2.0.0 (Wed Nov 26 16:16:43 CET 2008)  Locale es_ES
Exception in thread "main" java.lang.NoClassDefFoundError:
com/vlsolutions/swing/docking/DockingDesktop
    at org.omegat.Main.main(Unknown Source)
Caused by: java.lang.ClassNotFoundException:
com.vlsolutions.swing.docking.DockingDesktop
    at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:323)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:336)
    ... 1 more

As you can imagine there are more dependencies but the first error is always
for vldocking... which is really in the path!!

Attached is the output with the -verbose flag.

Of course compilation is always succesful, since the build.xml contens the
beautiful line:

<pathelement location="/usr/share/java/vldocking.jar"/>

But I think this doesn't affect the runtime linking...

Any suggestion, please?
--

Ismael Olea

http://olea.org/diario/

[Mary Ellen Foster]

2008/11/26 Ismael Olea :
> [olea@lisergia ~]$ /usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0/jre/bin/java  -cp
> /usr/share/java/vldocking-2.1.4.jar  -jar /usr/share/java/OmegaT.jar

If you're executing a jar file (as above) then the "-cp" argument is
ignored entirely. You should put the OmegaT jar on the classpath as
well and give the name of the main class in the script instead. I
think executing jars is actually officially discouraged in Fedora even
...

MEF

[Ismael Olea]

Thanks very much!

After reading your email I've mimic the bsh launch script and now the thing
is working as expected.

Thans!

2008/11/26 Mary Ellen Foster
> 2008/11/26 Ismael Olea :
> > [olea@lisergia ~]$ /usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0/jre/bin/java
>
> -cp
> > /usr/share/java/vldocking-2.1.4.jar  -jar /usr/share/java/OmegaT.jar
>
> If you're executing a jar file (as above) then the "-cp" argument is
> ignored entirely. You should put the OmegaT jar on the classpath as
> well and give the name of the main class in the script instead. I
> think executing jars is actually officially discouraged in Fedora even
> ...
>
> MEF
>
> --
> Mary Ellen Foster  --  http://homepages.inf.ed.ac.uk/mef/
> Informatik 6: Robotics and Embedded Systems, Technische Universität München
> and ICCS, School of Informatics, University of Edinburgh
>
> --
> fedora-devel-java-list mailing list
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