Re: classFormatException error in hello world example?
BenTaylor wrote:
i'm trying to run the very simple example at
[url]http://java.sun.com/docs/books/tutorial/getStarted/cupojava/
unix.html[/url]
having installed the jdk for linux from java.sun.com's downloads
section,
and I've done it exactly as described but it gives me this error:
[ben@benlinux helloworld]$ java HelloWorldApp
Exception in thread "main" java.lang.ClassFormatError: HelloWorldApp
(unrecognized class file version)
at java.lang.VMClassLoader.defineClass(libgcj.so.7rh)
at java.lang.ClassLoader.defineClass(libgcj.so.7rh)
at java.security.SecureClassLoader.defineClass(libgcj.so.7rh)
at java.net.URLClassLoader.findClass(libgcj.so.7rh)
at gnu.gcj.runtime.SystemClassLoader.findClass(libgcj.so.7rh)
at java.lang.ClassLoader.loadClass(libgcj.so.7rh)
at java.lang.ClassLoader.loadClass(libgcj.so.7rh)
at gnu.java.lang.MainThread.run(libgcj.so.7rh)
any ideas what could be the problem?
cheers
It looks like your system has a conflict between the Sun Java installation and
an existing gcj installation.
Check exactly what executable the "java" command runs (and also javac). It might
be that you've used a recent Sun SDK javac compiler to create the classes, but
the java command is an older version of java (from gcj).
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Phone : +44 (0)116 2523548, Fax : +44 (0)116 2523555
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