[Jython-users] Problem installing Jython 2.1

[Dave K. <dku...@cu...>]

Several questions:

1. I normally do my testing with Jython 2.2a, but someone asked me
   about installing Jython.  I'm assuming that I should still be
   recommending Jython 2.1 for production work.  Am I right about
   that?  Or, do some of you use Jython 2.2a for real work?

2. I tried downloading and installing jython_21.class.  When I do
   I get an exception:

     $ java -cp . jython_21 -o Jython-2.1
     Exception in thread "main" java.lang.ClassFormatError: jython_21 (unused d
        at java.lang.VMClassLoader.defineClass(java.lang.ClassLoader, java.lang
        at java.lang.ClassLoader.defineClass(java.lang.String, byte[], int, int
        at java.security.SecureClassLoader.defineClass(java.lang.String, byte[]
        at java.net.URLClassLoader.findClass(java.lang.String) (/usr/lib/libgcj
        at java.lang.ClassLoader.loadClass(java.lang.String, boolean) (/usr/lib
        at java.lang.ClassLoader.loadClass(java.lang.String) (/usr/lib/libgcj.s
        at java.lang.Class.forName(java.lang.String, boolean, java.lang.ClassLo
        at gnu.java.lang.MainThread.run() (/usr/lib/libgcj.so.6.0.0)

   That exception ("unused data before end of file") suggests that
   the downloaded file is corrupted.  But, the downloaded file is
   the same size as that reported at SourceForge.  And, I
   downloaded it several times with the same result each time.

   Does anyone have a suggestion?

I'm on Linux (Ubuntu) with the following version of Java:

    $ java -version
    java version "1.4.2"
    gij (GNU libgcj) version 4.0.2 20050808 (prerelease) (Ubuntu 4.0.1-4ubuntu9

Dave