LO installs openjdk-7-jre and openjdk-7-jre-headless and recommends icedtea-7-plugin and icedtea-7-jre-jamvm

[LAZA]

OpenJDK 7 is *outdated*.

~$ sudo apt-get install libreoffice libreoffice-help-de
[sudo] Passwort für laza:
Paketlisten werden gelesen... Fertig
Abhängigkeitsbaum wird aufgebaut.
Statusinformationen werden eingelesen.... Fertig
libreoffice-help-de ist schon die neueste Version.
Die folgenden Pakete wurden automatisch installiert und werden nicht mehr benötigt:
  libenca0 libsoxr0
Verwenden Sie »apt-get autoremove«, um sie zu entfernen.
Die folgenden zusätzlichen Pakete werden installiert:
  ca-certificates-java default-jre default-jre-headless fonts-dejavu-extra fonts-sil-gentium fonts-sil-gentium-basic java-common
  libatk-wrapper-java libatk-wrapper-java-jni libcdr-0.1-1v5 libfreehand-0.1-1 libgif7 libgnomevfs2-0 libgnomevfs2-common libhsqldb1.8.0-java
  libmspub-0.1-1 libpagemaker-0.0-0 libreoffice-avmedia-backend-gstreamer libreoffice-base libreoffice-base-drivers libreoffice-draw
  libreoffice-gnome libreoffice-impress libreoffice-java-common libreoffice-pdfimport libreoffice-report-builder-bin
  libreoffice-sdbc-firebird libreoffice-sdbc-hsqldb libsctp1 libservlet3.0-java libvisio-0.1-1 openjdk-7-jre openjdk-7-jre-headless
  tzdata-java
Vorgeschlagene Pakete:
  equivs libgnomevfs2-bin libgnomevfs2-extra gamin fam gnome-mime-data java-virtual-machine imagemagick graphicsmagick-imagemagick-compat
  libreoffice-grammarcheck openclipart2-libreoffice openclipart-libreoffice pstoedit unixodbc libreoffice-officebean libreoffice-gcj
  libreoffice-report-builder libjtds-java libreoffice-mysql-connector libmyodbc libmysql-java libreoffice-sdbc-postgresql odbc-postgresql
  libpg-java libsqliteodbc tdsodbc mdbtools libreoffice-evolution lksctp-tools icedtea-7-plugin icedtea-7-jre-jamvm sun-java6-fonts
  fonts-ipafont-gothic fonts-ipafont-mincho ttf-wqy-microhei ttf-wqy-zenhei f

---> The OpenJDK 8 project, which is the basis for JDK 8, was released on 18 March 2014.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: libreoffice 1:5.0.2-0ubuntu2
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
ApportVersion: 2.19.2-0ubuntu1
Architecture: amd64
Date: Wed Oct 28 21:45:25 2015
InstallationDate: Installed on 2015-10-28 (0 days ago)
InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20151028)
ProcEnviron:
 LANGUAGE=de_DE
 TERM=xterm
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: libreoffice
UpgradeStatus: No upgrade log present (probably fresh install)

[Hans Joachim Desserud (hjd)]

Thanks for taking your time to report this issue and help making Ubuntu better.

When attempting to install libreoffice on Ubuntu 16.04, I get the following output:
$ sudo apt install libreoffice libreoffice-help-de
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
  ca-certificates-java default-jre default-jre-headless fonts-dejavu fonts-dejavu-extra fonts-sil-gentium fonts-sil-gentium-basic
  java-common libbonobo2-0 libbonobo2-common libgif7 libgnome-2-0 libgnome2-common libgnomevfs2-0 libgnomevfs2-common libhsqldb1.8.0-java
  liborbit-2-0 libreoffice-base libreoffice-base-drivers libreoffice-java-common libreoffice-l10n-de libreoffice-report-builder-bin
  libreoffice-sdbc-firebird libreoffice-sdbc-hsqldb libservlet3.1-java openjdk-8-jre openjdk-8-jre-headless
Suggested packages:
  default-java-plugin libbonobo2-bin desktop-base libgnomevfs2-bin libgnomevfs2-extra gamin | fam gnome-mime-data java-virtual-machine
  libhsqldb1.8.0-java-gcj libreoffice-grammarcheck openclipart2-libreoffice | openclipart-libreoffice pstoedit unixodbc
  gstreamer1.0-plugins-ugly gstreamer1.0-plugins-bad gstreamer1.0-libav libreoffice-officebean libreoffice-gcj libreoffice-report-builder
  libjtds-java libreoffice-mysql-connector | libmyodbc | libmysql-java libreoffice-sdbc-postgresql | odbc-postgresql | libpg-java
  libsqliteodbc | tdsodbc | mdbtools hunspell-dictionary-de | myspell-dictionary-de hyphen-de libreoffice-grammarcheck-de mythes-de
  icedtea-8-plugin openjdk-8-jre-jamvm fonts-ipafont-gothic fonts-ipafont-mincho ttf-wqy-microhei | ttf-wqy-zenhei fonts-indic
The following NEW packages will be installed:
  ca-certificates-java default-jre default-jre-headless fonts-dejavu fonts-dejavu-extra fonts-sil-gentium fonts-sil-gentium-basic
  java-common libbonobo2-0 libbonobo2-common libgif7 libgnome-2-0 libgnome2-common libgnomevfs2-0 libgnomevfs2-common libhsqldb1.8.0-java
  liborbit-2-0 libreoffice libreoffice-base libreoffice-base-drivers libreoffice-help-de libreoffice-java-common libreoffice-l10n-de
  libreoffice-report-builder-bin libreoffice-sdbc-firebird libreoffice-sdbc-hsqldb libservlet3.1-java openjdk-8-jre openjdk-8-jre-headless
0 upgraded, 29 newly installed, 0 to remove and 0 not upgraded.
Need to get 39,7 MB of archives.
After this operation, 164 MB of additional disk space will be used.

Openjdk-7 is no longer mentioned and has been replaced with openjdk-8. I therefore believe this issue can be closed. Since libreoffice depends on the default-jre [1], I don't think this was fixed when java8 became the default [2].

[1] http://packages.ubuntu.com/xenial/libreoffice
[2] http://packages.ubuntu.com/xenial/default-jre