RE: AS400 Toolbox for Java

["Fred Kulack" <kulack@xxxxxxxxxx>]

On 05/22/2001 at 08:26:24 AM, owner-java400-l@midrange.com wrote:
Let me rephrase my questions.

I have a Java program Test.class reside in AS400 IFS directory:
/AGTJAVA/AGTCOMP/AS400/Test.class.  This is a JDBC program using AS400 DB2
native JDBC driver.

The JVM on AS400 is version 1.2.2.
I set ENVVAR (*SYS) as CLASSPATH
= '.:/QIBM/ProdData/Java400/ext/db2_classes.jar'
I also did:  ADDLNK OBJ('/QIBM/ProdData/Java400/ext/db2_classes.jar')
NEWLNK
('/QIBM/UserData/Java400/ext/db2_classes.jar')

My program has no problem run from AS400 Qshell (by cd to
/AGTJAVA/AGTCOMP/AS400 directory and do JAVA Test). But I can not run the
same program from AS400 command line as: RUNJVA CLASS
('/AGTJAVA/AGTCOMP/AS400/Test').  I got "java.lang.NoClassDefFoundError".

Also I create a client Java GUI by using JavaAppliactionCall and
VJavaAppliactionCall classes from AS400 Toolbox for Java. Then I call the
same Test program on AS400.  I got the same
"java.lang.NoClassDefFoundError" error.
--- end of excerpt ---

Dunno, but I'd guess that you would have to restart the Toolbox class
server jobs so they get the new environment variable.
The way you can check this would be to use the command "echo $CLASSPATH"
and see if you have the new or old value.

BUT, what you're doing is not a great idea. In general, I don't recommend
treating the AS/400 like the system on your desktop (and environment
variables are no different) with regard to configuration changes.
You should never set a SYSTEM wide environment variable unless you really
want it set at the SYSTEM level.
By setting a system wide environment variable you are impacting everything
on the system with that variable.

Remember,
  Most jobs on the AS/400 don't use and don't need environment variables.

  Its unlikely you want to effect Websphere, Notes, or whatever else is
running with your CLASSPATH setting (especially the '.') value.

  Also, if someone changes that value, your application fails.

Use the -classpath parameter on the java command and put the classpath
setting inside your application.


"The stuff we call "software" is not like anything that human society
  is used to thinking about. Software is something like a machine, and
  something like mathematics, and something like language, and
  something like thought, and art, and information...
  but software is not in fact any of those other things."
Bruce Sterling - The Hacker Crackdown

Fred A. Kulack  -  AS/400e  Java and Java DB2 access, Jdbc, JTA, etc...
IBM in Rochester, MN  (Phone: 507.253.5982   T/L 553-5982)
mailto:kulack@us.ibm.com   Personal: mailto:kulack@bresnanlink.net
AOL Instant Messenger: Home:FKulack  Work:FKulackWrk

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