Java version 7.9 just came out today or last night. The link to Check your Java version is in my signature.
If you have to click on All java downloads on the left and you will see that 7.9 is available for download.
Download the Linux version for 32 bit machines or the Linux x64 version for 64 bit machines.
The .RPM version is for other Linux Distros.
Choose "save file" when prompted and then the instructions to install it are in the other link in my signature How to manually update Java.
The How to link is Oracle (Sun) Java JRE for Ubuntu, Linux Mint and Debian.
The instructions have been updated to 7.9 so just copying and pasting is all that is needed.
For 32 bit the instructions are on the left and for 64 bit the instructions are on the right.
It will tell you to remove any older version first and provides instructions for doing so.
I am aware there is a repository for this but, if you like installing it the manual way, this will work.
When you get it installed open a tab and enter
It should show this:Code:about:plugins
Java(TM) Plug-in 1.7.0_09