Ubuntu/Applications/Java7

Applications | Java7 | Conky | Console Browsers | Fail2Ban | PDSH

http://askubuntu.com/questions/56104/how-can-i-install-sun-oracles-proprietary-java-6-7-jre-or-jdk
https://help.ubuntu.com/community/Java http://java.com/en/download/help/enable_browser_ubuntu.xml

Download and Install Java

Download Java:

http://download.oracle.com/otn-pub/java/jdk/7u13-b20/jre-7u13-linux-i586.tar.gz

Remove OpenJDK:

sudo apt-get purge openjdk*

Extract downloaded tar:

tar -xvf ~/Downloads/jre-7u13-linux-i586.tar.gz

Move Java to common location:

sudo mv jre1.7.0_13/* /usr/lib/jvm/jre1.7.0/

Determine current installed java alternatives:

sudo update-alternatives --config java

There are 2 choices for the alternative java (providing /usr/bin/java).

Selection Path Priority Status
————————————————————
* 0 /usr/lib/jvm/java-6-openjdk/jre/bin/java 1061 auto mode
1 /usr/lib/jvm/java-6-openjdk/jre/bin/java 1061 manual mode
2 /usr/lib/jvm/java-6-sun/jre/bin/java 63 manual mode

Press enter to keep the current choice[*], or type selection number:

The above example shows you have (3) variants, 0-2. You'll want to install the next as (3).
Update Alternatives with Java 7

sudo update-alternatives --install /usr/bin/java /java /usr/lib/jvm/jre1.7.0/bin/java 3

Configure Java:

sudo update-alternatives --config java

select the one that has Java 7 via the number to the far left.

Check Installed Version:

java -version

Configure Firefox Plugin

Remove Icedtea (if installed):

sudo apt-get remove icedtea6-plugin

Remove former versions of java plugins

sudo unlink /usr/lib/mozilla/plugins/libnpjp2.so

Find Plugs-ins folder or create new:

find -name mozilla
/usr/lib/mozilla/plugins/

sudo mkdir -p /usr/lib/mozilla/plugins

Create symbolic link:

sudo ln -s /usr/lib/jvm/jre1.7.0/lib/i386/libnpjp2.so /usr/lib/mozilla/plugins/

Configure Chrome Plugin

Note: Going to Oracle's Java Tester fails. However, when going to http://www.javatester.org, it passed and proved that Java works in Chrome

Create folder for plugins:

sudo mkdir -p /opt/google/chrome/plugins

Create symbolic link:

sudo ln -s /usr/lib/jvm/jre1.7.0/lib/i386/libnpjp2.so /opt/google/chrome/plugins/