Install4j is an very versatile installer builder. I'm interested in finding out if it can be used to configure and install a server-sided certificate (possibly through java keystore/keytool interaction). Such a certificate would be used by the application that is being installed by Install4j (which, in my case, is a web server that is to be accessed over HTTPS).
In Install4j's documentation, most references to 'certificate' that I come across relate to code signing functionality. A worthwhile feature, but different from the one that I'm currently interested in.
As of install4j 10, there are no specific actions for Java keystore modifications.
You would have to call the keytool command line tool in the JRE with "Run executable or batch file" actions to install a certificate into the Java keystore.