I'm really bad at this, and this is my first experience using Ubuntu. If you don't think your answer needs to be explained, it needs to be explained as if I were three. I'm talking explicit, clear, verbatim instructions. Thank you for any and all help, especially since I'm so stupid.
I have followed this post and downloaded Ubuntu on my HP Chromebook.
I have followed this link and downloaded the Runescape client on my device.
When I check what version of java I'm running, I get this:
java version "1.6.0_34"
OpenJDK Runtime Environment (IcedTea6 1.13.6) (6b34-1.13.6-1ubuntu0.12.04.1)
OpenJDK Zero VM (build 23.25-b01, mixed mode)
Why is my client not running and what can I do to make it run?