finalize() is depricated since Java9

[karczex]

ISSUE: Finalize is depricated since Java9

Details

Because of problems described in finalize() documentation, this method should be removed from Builder class. https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html#finalize--

According to java documentation classes Database and Builder should implement AutoCloseable interface.

Requested priority: Show Sopper if project will migrate to higher Java version, Low otherwise

[lukaszstolarczuk]

ref. #80

[KFilipek]

Here is a short overview what is possible on newer Java in case of finalize deprecation. https://stackoverflow.com/questions/52879761/should-java-9-cleaner-be-preferred-to-finalization