ok this my java -version

java version "1.4.2"

gij (GNU libgcj) version 4.1.2 20080704 (Red Hat 4.1.2-48)

 

Copyright © 2006 Free Software Foundation, Inc.

This is free software; see the source for copying conditions.  There is NO

warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

 

but when i run Login server i got this error

 

Exception in thread "main" java.lang.ClassFormatError: net.sf.l2j.loginserver.L2LoginServer (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)

 

can you help me?

up. same error on linux (((

That's gcj (which sucks big time). Install sun's java...