Your system requires Sun/Oracle Java VM in Version 11 11.0.8 or newer (Deprecated but still supported for version 5.8: Sun/Oracle Java VM in Version 1.8.0 Update 3 (Java 8) or newer). Other than that, the distribution of jadice server is pre-configured so that adjustments are unnecessary at the beginning and jadice server can be launched without further ado.
(In order to activate LibreOffice, the class path needs to be adjusted. For more information on this, see the section called “Configuring LibreOffice”)