Removing openjdk-7-jdk:amd64 (7u95-2.6.4-0ubuntu0.15.10.2) ...
Removing openjdk-7-jre:amd64 (7u95-2.6.4-0ubuntu0.15.10.2) ...
Removing ca-certificates-java (20140324) ...
Removing openjdk-7-jre-headless:amd64 (7u95-2.6.4-0ubuntu0.15.10.2) ...
Removing tzdata-java (2016c-0ubuntu0.15.10) ...
Processing triggers for hicolor-icon-theme (0.15-0ubuntu1) ...
dpkg: cycle found while processing triggers:
 chain of packages whose triggers are or may be responsible:
  gnome-menus -> bamfdaemon
 packages' pending triggers which are or may be unresolvable:
  ca-certificates: update-ca-certificates
  gnome-menus: /usr/share/applications
  doc-base: /usr/share/doc-base
  bamfdaemon: /usr/share/applications
  menu: /usr/share/menu
  gconf2: /usr/share/GConf/gsettings
  ufw: /etc/ufw/applications.d
dpkg: error processing package ca-certificates (--remove):
 triggers looping, abandoned