Re: NoClassDefFoundError org/xml/sax/InputSource

Joe wrote:

Both pieces of advice turned out to be great. The machine is using
1.3 by default, but by adding that environment variable I am able to
run with a 1.4 VM. I was speaking with one of our SA's today and he
mentioned that perhaps there was a compiler option that would allow
the programmer to choose the VM, has anyone heard of that? As a
follow-up question, how/when is the default JVM specified? I saw some
IBM documentation about installing Java and running with multiple VMs,
but I didn't see much about configuring/choosing which one would run
when.

If you mean an RPG compiler option to choose the VM, there isn't one. You can use the SystemDefault.properties file to set the default java.version for all uses of Java. (At least, that's true if you are on V5R3 or later. Prior to V5R3, you must use the QIBM_RPG_JAVA_PROPERTIES environment variable to set the java.version property for Java calls from RPG.)

Start here http://publib.boulder.ibm.com/infocenter/iseries/v5r4/topic/rzaha/sysprop.htm to see all the places the system will look for the SystemDefault.properties file.

The Invocation API is listed as the first in the order of precedence on that page. When you use RPG to start the JVM, RPG uses the Invocation API to start the JVM, and it passes in the properties from the QIBM_RPG_JAVA_PROPERTIES environment variable. So the values of the QIBM_RPG_JAVA_PROPERTIES properties will always win when the RPG runtime starts the JVM.

This page talks about how to control which JDK gets used: http://publib.boulder.ibm.com/infocenter/iseries/v5r4/topic/rzaha/multjdk.htm

It says that the java.version property controls the JDK; near the end of the page it says which will be the default JDK depending on what you have installed.