I have tried several times to create a database using Libre, but each time it stops me and tells me that LibreOffice requires a java runtime environment to be installed. But it was installed before I ever installed Libre. Nonetheless, I have removed and reinstalled it three times, but I get the exact same error message each time. Every other part of Libre works just fine - the only problem I have is with the database creation function. Any ideas on what I can do?