LibreOffice integration with OpenJDK instead of Oracle Java

edited November 7, 2019

Oracle adjusted it's licence policy so that it is not allowed to use Java on non-private computers without payment. I use zotero-LibreOffice for a long time and want to install it on my computer at the research institute as well. Unfoutunately I run into problems installing the Zotero-LibreOffice integration (plug-in). In the process of installing it from within the add-ons pane of Zotero I get the message: "Zotero Libre-Office plug-in requires Java Runtime Environment".

This is not a privat computer so I need to use the alternative free version of Java OpenJDK. I installed it under Windows 10 with the installers from the AdoptOpenJDK project ( First I installed the current 13 version. Still the message that JRE is required appeared.

After reading some of the post in this forum I decided to switch back to version 8 and installed the OpenJDK version 8. On command line"java -version" shows:
openjdk version "1.8.0_232"
OpenJDK Runtime Environment (AdoptOpenJDK)(build 1.8.0_232-b09)
OpenJDK 64-Bit Server VM (AdoptOpenJDK)(build 25.232-b09, mixed mode)
Still when trying to install zotero LibreOffice plug-in I get the message that java is missing.

Any Idea how I can use Zotero integration into LibreOffice without infringe software licence or make my institution feed Oracle with money?
I can not belife that two leading open-source projects like Zotero and LibreOffice depend on proprietary software from Oracle while there is an opensource alternative.
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