Java update problem and not starting problem

Hello im new here and kinda run into a problem i first loading up the
server and everything was fine but some of the plugins were not working
so i look at logs and i seen that MineOS is at Java 1.6.0_35 and i have
try to update it i have found where the java files located and i mess
around in that and here a screenshot on what the problem I’m am having http://gyazo.com/1736663ef9c1ccbcf1d292f867b5ca05 keep saying offline and it say its started already i don’t know how to fix it or how to update java anyone can help me please and here is my mineos.log http://pastebin.com/7tJPS86Y

To update and repair Java, please follow the directions on this page: http://m.webupd8.org/2014/03/how-to-install-oracle-java-8-in-debian.html?m=1

And just to make sure, you do have 30GB of available RAM to start the server with, right?

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