Re: How to specify which JVM to use?

[James Perkins <jrperkinsjr@xxxxxxxxx>]

You can add an environment variable for the Java version too,
QIBM_RPG_JAVA_PROPERTIES. The value would be "-Djava.version=1.5".

There is also an environment variable to that you can specify the path
to the SystemDefaults.properties file too.

So I guess I would probably just store the ADDENVVAR command with the
appropriate value in a table or a stream file and use a native program
to execute the command. I generally us a CL to set-up the classpath
anyway, but I'm not sure if you are doing that or not.

--
James R. Perkins



On Tue, Feb 2, 2010 at 08:36, David Gibbs <david@xxxxxxxxxxxx> wrote:
> I'm in a bit of a quandary here ... I'm trying to figure out the best way to allow customers to specify which version of the JVM they want to use with a Java application on the i.
>
> There are multiple JVM's available ... 64bit Classic, 32bit PASE, and 64bit PASE.
>
> For the classic JVM, you can specify the java.version property in the System.properties, SystemDefault.properties file, or on the command line.
>
> But with the PASE JVM's, the java version is specified using the JAVA_HOME environment variable.
>
> Is it possible to have the JAVA_HOME environment variable set specifically at the user level?
>
> I tried putting "export JAVA_HOME=/QIBM/ProdData/Java400/jdk15" in the users .profile file, which was picked up in qshell, but not in a direct JAVA invocation.
>
> I also tried putting 'java.home=/QOpenSys/QIBM/ProdData/JavaVM/jdk50/32bit' in the users SystemDefault.properties file, but got either errors or the value was ignored (different behavior for different OS versions).
>
> Any thoughts?
>
> Thanks!
>
> david
>
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