The LANCOM Wireless ePaper Server supports the following Java runtime environments as of version 1.91 (download latest version):
Oracle Java JRE 8
OpenJDK Version 8
Since companies have to purchase a commercial license for Oracle Java runtime environments since February 2019, the use of the free-to-use "Open JDK" in version 8 offers an alternative.
Please note the information in the following Knowledge Base article regarding the installation of OpenJDK: