The installation process will use its own version of Java temporarily if Java is not already installed on the target system. However, only versions up to and including Java 1.7 (SE 7) on the target system are compatible with the installation process. Unfortunately, if Java 1.8 (SE 8) or later is installed, the Reality installation process will fail with the error
The current solution is to remove the incompatible version of Java from the target system before starting the Reality installation process. After Reality has been successfully installed, Java can be installed again.