Lance,
In the install directory where Broker is installed there will be a jvm directory at the same level. Under the jvm directory will be another directory with the version as part of its name: for example, jvm150 or jvm160. Can’t confirm that is the same with Java 1.4, so it will still be interesting to hear what SriLakshmi says. But to verify you can run /jvm/jvm160/bin/java -version.
Regards,
Richard