Is there a way to point the application to a different JRE after installation? The application installed and created a i4j_jres folder for its embedded java. does this program allow for it to have a different java location without needing to specify an environment variable?
You can change the contents of the file .install4j\pref_jre.cfg to use another JRE. It will still be checked if it matches the version requirements.
A programmatic way to do this with the install4j API is to call
com.install4j.api.JVMSelector.setPreferredJVM(...)