The following simple illustration portrays your test configuration:
Agent Other VM
This illustration is included to help you understand which parts of the test process run on which JVMs. This is important to understand when you configure the classpath for each of the JVMs. The Configuration Editor does as much as it can to set the classpaths correctly, but if you get errors about classes not being found, check that the classpaths are set correctly.

The circles represent processes, the boxes represent computers. JavaTest runs on one system (using the Oracle's reference implementation); the JavaTest Agent, JCK tests, and your runtime product run on the target system.

Note that there are multiple instances of the Test VMs -- a new VM is started for every test.

For more information about JavaTest Agent, refer to the JavaTest User's Guide or to the JavaTest online help.