I have found solutions here - https://stackoverflow.com/questions/51256462/r-cannot-install-rjava-what-is-r-api-3-4 This help me.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1770032 Title: r-cran-rjava depends on non existant r-api-3.4 package To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rjava/+bug/1770032/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs