How to control which JVM is started

[davisty]

Hello,

How do I control which JVM is started on the V6R1?

We have for jdk1.4, jdk1.5 and jdk6. They each have a rt.jar.

Thank You

[dhanuxp]

Re: How to control which JVM is started

java -Djava.version=1.4 MyClass

http://www.mysamplecode.com/2011/05/set-java-version-on-iseriesas400-also.html

[Scott Klement]

Re: How to control which JVM is started

Using "java.version" (as suggested by dhanuxp) only works for the "classic" JVM. (And, in my opinion, was a mistake on IBM's part in the first place!)

Newer versions of Java on IBM i are not available as a "classic" JVM, they are only available using the J9 technology, and will not work with "java.version". Instead, you should use the same way you select a JVM on all other platforms, the JAVA_HOME environment variable. This method is also much more versatile because you can, for example, set it system-wide and control the default JVM version for everyone.

Take a look here:

http://www-01.ibm.com/support/docview.wss?uid=nas13e0b7af2cf7fa663862577a500503434

And also look in the Information Center for your release of the IBM i operating system.