apt-get install several problems

Good Evening, I am trying to install postgres pack, but now i am in front of a problem in my droplet.

every time i shot “apt-get install postgresql-9.3” i get following error:

Reading package lists… Done Building dependency tree Reading state information… Done You might want to run ‘apt-get -f install’ to correct these: The following packages have unmet dependencies: openjdk-7-jre : Depends: libpulse0 (>= 1:0.99.1) but it is not going to be installed postgresql-9.3 : Depends: libpq5 (>= 9.1~) but it is not going to be installed Depends: postgresql-client-9.3 but it is not going to be installed Depends: postgresql-common (>= 142~) but it is not going to be installed E: Unmet dependencies. Try ‘apt-get -f install’ with no packages (or specify a solution).

i already did :

apt-get -f install libpulse0 apt-get -f install apt-get -f update apt-get -f upgrade

But i got no success.

Do you have idea what it could be caused by?

Att, Marcello Ribeiro