Latest Java-openjdk upgrade

[Angelo Moreschini]

Here a link that explains the *java.lang.ClassFormatError*:
http://craftingjava.blogspot.co.il/2012/07/reason-for-javalangclassformaterror.html

--------------------
"*this error would be thrown when the java virtual machine attempts to read
a class file and founds that the class file has been altered in such a way
that it loses its integrity.*"

Here they are trying to say that *"if a class file has been modified in a
complicated way  then this error would be thrown." *

 There may be two possible ways a class file can get corrupted as far i
know.

 1.May be the compiler have some unresolved bugs in it.
2.The programmer may intentionally change the class file for some reasons.
----------------------

In your case this error does not seem to depend on your code.

So, I can suggest you to use Oracle JDK instead OpenJDK, this because I had
some problems using NetBeans and then I got that suggestion, that helped me.


Angelo

On Tue, Jan 27, 2015 at 1:35 AM, Kevin Cummings <cummings at kjchome.homeip.net
> wrote:

> I updated to java-1.7.0-openjdk.x86_64 1:1.7.0.75-2.5.4.2.fc20 today
> (along with the java-1.7.0-openjdk-headless and java-1.7.0-openjdk-devel
> packages).  After the upgrade, nothing java related would run.  (not the
> compiler, not the jar command, and I couldn't run any pre-built .jars.)
>  The error was:
>
> > Error occurred during initialization of VM
> > java/lang/ClassFormatError: Unknown constant tag 99 in class file
> java/lang/Class
>
> Downgrading back to java-1.7.0-openjdk.x86_64 1:1.7.0.60-2.4.3.0.fc20 et
> al fixed the problem.
>
> --
> Kevin J. Cummings
> kjchome at verizon.net
> cummings at kjchome.homeip.net
> cummings at kjc386.framingham.ma.us
> Registered Linux User #1232 (http://www.linuxcounter.net/)
> --
> users mailing list
> users at lists.fedoraproject.org
> To unsubscribe or change subscription options:
> https://admin.fedoraproject.org/mailman/listinfo/users
> Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
> Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
> Have a question? Ask away: http://ask.fedoraproject.org
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.fedoraproject.org/pipermail/users/attachments/20150127/8fe0f072/attachment-0001.html>