brous_000@ubuntu:~$ sudo apt-get remove openjdk-6-jre default-jre default-jre-headless
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package default-jre is not installed, so not removed
Package openjdk-6-jre is not installed, so not removed
The following package was automatically installed and is no longer required:
  icedtea-netx-common
Use 'apt-get autoremove' to remove them.
The following packages will be REMOVED:
  default-jre-headless sun-java6-jre
0 upgraded, 0 newly installed, 2 to remove and 4 not upgraded.
1 not fully installed or removed.
After this operation, 49.2 kB disk space will be freed.
Do you want to continue [Y/n]? y
dpkg: warning: there's no installed package matching sun-java6-jre:amd64
(Reading database ...
dpkg: warning: files list file for package `sun-java6-jre' missing, assuming package has no files currently installed.
(Reading database ... 193710 files and directories currently installed.)
Removing default-jre-headless ...
brous_000@ubuntu:~$ sudo apt-get purge openjdk-\* icedtea-\* icedtea6-\*
Reading package lists... Done
Building dependency tree
Reading state information... Done
Note, selecting 'openjdk-7-dbg' for regex 'openjdk-*'
Note, selecting 'openjdk7-jdk' for regex 'openjdk-*'
Note, selecting 'openjdk-7-doc' for regex 'openjdk-*'
Note, selecting 'openjdk-jre' for regex 'openjdk-*'
Note, selecting 'openjdk-6-demo' for regex 'openjdk-*'
Note, selecting 'openjdk-7-jdk' for regex 'openjdk-*'
Note, selecting 'openjdk-7-jre' for regex 'openjdk-*'
Note, selecting 'uwsgi-plugin-jvm-openjdk-6' for regex 'openjdk-*'
Note, selecting 'openjdk-6-source' for regex 'openjdk-*'
Note, selecting 'openjdk-6-jre-lib' for regex 'openjdk-*'
Note, selecting 'uwsgi-plugin-jwsgi-openjdk-6' for regex 'openjdk-*'
Note, selecting 'openjdk-6-jre-headless' for regex 'openjdk-*'
Note, selecting 'openjdk-7-jre-zero' for regex 'openjdk-*'
Note, selecting 'openjdk-7-source' for regex 'openjdk-*'
Note, selecting 'openjdk-7-demo' for regex 'openjdk-*'
Note, selecting 'openjdk-6-jre-zero' for regex 'openjdk-*'
Note, selecting 'openjdk-7-jre-lib' for regex 'openjdk-*'
Note, selecting 'openjdk-6-dbg' for regex 'openjdk-*'
Note, selecting 'openjdk-6-doc' for regex 'openjdk-*'
Note, selecting 'openjdk-6-jdk' for regex 'openjdk-*'
Note, selecting 'openjdk-6-jre' for regex 'openjdk-*'
Note, selecting 'openjdk-7-jre-headless' for regex 'openjdk-*'
Note, selecting 'icedtea6-jre-cacao' for regex 'icedtea-*'
Note, selecting 'icedtea-netx' for regex 'icedtea-*'
Note, selecting 'icedtea-6-jre-cacao' for regex 'icedtea-*'
Note, selecting 'icedtea-7-jre-cacao' for regex 'icedtea-*'
Note, selecting 'icedtea-netx-common' for regex 'icedtea-*'
Note, selecting 'icedtea-6-plugin' for regex 'icedtea-*'
Note, selecting 'icedtea-6-jre-jamvm' for regex 'icedtea-*'
Note, selecting 'icedtea-plugin' for regex 'icedtea-*'
Note, selecting 'icedtea-7-jre-jamvm' for regex 'icedtea-*'
Note, selecting 'icedtea-7-plugin' for regex 'icedtea-*'
Note, selecting 'icedtea-gcjwebplugin' for regex 'icedtea-*'
Note, selecting 'icedtea6-plugin' for regex 'icedtea-*'
Note, selecting 'icedtea6-jre-cacao' for regex 'icedtea6-*'
Note, selecting 'icedtea6-plugin' for regex 'icedtea6-*'
Package icedtea-6-plugin is not installed, so not removed
Package icedtea-netx is not installed, so not removed
Package icedtea-plugin is not installed, so not removed
Package openjdk-6-dbg is not installed, so not removed
Package openjdk-6-demo is not installed, so not removed
Package openjdk-6-doc is not installed, so not removed
Package openjdk-6-jdk is not installed, so not removed
Package openjdk-6-jre is not installed, so not removed
Package openjdk-6-source is not installed, so not removed
Package icedtea-7-plugin is not installed, so not removed
Package icedtea6-plugin is not installed, so not removed
Package openjdk-6-jre-zero is not installed, so not removed
Package openjdk-7-dbg is not installed, so not removed
Package openjdk-7-demo is not installed, so not removed
Package openjdk-7-doc is not installed, so not removed
Package openjdk-7-jdk is not installed, so not removed
Package openjdk-7-jre-zero is not installed, so not removed
Package openjdk-7-source is not installed, so not removed
Package uwsgi-plugin-jvm-openjdk-6 is not installed, so not removed
Package uwsgi-plugin-jwsgi-openjdk-6 is not installed, so not removed
The following packages will be REMOVED:
  ca-certificates-java* icedtea-6-jre-cacao* icedtea-6-jre-jamvm*
  icedtea-7-jre-cacao* icedtea-7-jre-jamvm* icedtea-netx-common*
  libatk-wrapper-java* libatk-wrapper-java-jni* openjdk-6-jre-headless*
  openjdk-6-jre-lib* openjdk-7-jre* openjdk-7-jre-headless* openjdk-7-jre-lib*
  sun-java6-jre
0 upgraded, 0 newly installed, 14 to remove and 4 not upgraded.
1 not fully installed or removed.
After this operation, 187 MB disk space will be freed.
Do you want to continue [Y/n]? y
dpkg: warning: there's no installed package matching sun-java6-jre:amd64
(Reading database ...
dpkg: warning: files list file for package `sun-java6-jre' missing, assuming package has no files currently installed.
(Reading database ... 193703 files and directories currently installed.)
Removing icedtea-7-jre-jamvm ...
Removing icedtea-7-jre-cacao ...
Removing icedtea-6-jre-jamvm ...
Removing icedtea-6-jre-cacao ...
Removing icedtea-netx-common ...
Purging configuration files for icedtea-netx-common ...
Removing openjdk-7-jre-lib ...
Removing openjdk-6-jre-lib ...
Removing ca-certificates-java ...
Purging configuration files for ca-certificates-java ...
Removing openjdk-6-jre-headless ...
update-alternatives: using /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/keytool to provide /usr/bin/keytool (keytool) in auto mode.
update-alternatives: using /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/pack200 to provide /usr/bin/pack200 (pack200) in auto mode.
update-alternatives: using /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/rmid to provide /usr/bin/rmid (rmid) in auto mode.
update-alternatives: using /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/rmiregistry to provide /usr/bin/rmiregistry (rmiregistry) in auto mode.
update-alternatives: using /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/unpack200 to provide /usr/bin/unpack200 (unpack200) in auto mode.
update-alternatives: using /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/orbd to provide /usr/bin/orbd (orbd) in auto mode.
update-alternatives: using /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/servertool to provide /usr/bin/servertool (servertool) in auto mode.
update-alternatives: using /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/tnameserv to provide /usr/bin/tnameserv (tnameserv) in auto mode.
update-alternatives: using /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/jexec to provide /usr/bin/jexec (jexec) in auto mode.
Purging configuration files for openjdk-6-jre-headless ...
Removing libatk-wrapper-java-jni ...
Purging configuration files for libatk-wrapper-java-jni ...
Removing libatk-wrapper-java ...
Removing openjdk-7-jre ...
Removing openjdk-7-jre-headless ...
Purging configuration files for openjdk-7-jre-headless ...
Processing triggers for hicolor-icon-theme ...
Processing triggers for bamfdaemon ...
Rebuilding /usr/share/applications/bamf.index...
Processing triggers for desktop-file-utils ...
Processing triggers for gnome-menus ...
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
brous_000@ubuntu:~$ java -version
java version "1.7.0_06"
Java(TM) SE Runtime Environment (build 1.7.0_06-b24)
Java HotSpot(TM) 64-Bit Server VM (build 23.2-b09, mixed mode)