Installed libreoffice today to start creating a database on MacBookAir ( used to use MS Access). Tried to create new table. Message asking for java runtime enviroment. Installed JRE, restarted computer, re installed LibrOffice …: no joy
You have to install the full Java Developers Kit. Make sure that you take the correct version - 32 bits if your Libre is 32 bits, 64 bits if you have 64 bits Libre.
See also LibreOffice 5.2.4.2 Base, iMac: error: 'no JRE' despite installing Oracle JDK